MAY ON CBS = SEASON FINALES, CLIFFHANGERS, WEDDINGS AND RELATIONSHIPS HANGING IN THE BALANCE

The Drama

Det. Ray Langston Must use Deadly Force for the First Time on "CSI"

Gibbs Is Forced to Make a Decision that Sends Shockwaves Through NCIS

Red John Strikes Again on "The Mentalist"

Horatio Fights to Save Yelina While Delko's Life Hangs in the Balance on "CSI: Miami"

Melinda and Jim Renew Their Wedding Vows on "Ghost Whisperer"

Amita's Kidnapping Leads the "Numb3rs" Team to a Charismatic Sociopath

Danny and Elena Take Their Relationship to a New Level on "Without a Trace"

The "CSI: NY" Team Loses a Member and Another Is Threatened

While the BAU Team Tracks One Serial Killer, Another Returns to Exact His Revenge on a Two-Hour "Criminal Minds" Event

A Killer Commits a Shocking Act Against Det. Rush; the Music of Pearl Jam Is Exclusively Featured in the Two-Part "Cold Case" Finale

"The Unit" Must Locate Nuclear Bombs Targeting Three U.S. Cities

The Laughs

Leonard and Penny Reconsider Their Feelings for One Another on "The Big Bang Theory"

Ted Encourages Barney to Profess His Love to Robin on "How I Met Your Mother"

Mia's Return Makes Charlie Question His Relationship with Chelsea on "Two and a Half Men"

Jeff and Audrey Try to Perk Up Their Sex Life on "Rules of Engagement"

Christine Learns Some Shocking News at the Wedding of New Christine and Richard on "The New Adventures of Old Christine"

Gary and Allison: In the Bedroom Again? on "Gary Unmarried"

The Reality

The Remaining Three Teams Race to the Finish Line in the Season Finale of "The Amazing Race 14"

The Ultimate Survivor Is Crowned on the Special Two-Hour Finale of "Survivor: Tocantins"

CBS in May will feature unpredictable season finales, edge of your seat cliffhangers, weddings and relationships hanging in the balance along with the finales of THE AMAZING RACE 14 and SURVIVOR: TOCANTINS.

Guest-starring in CBS's season finales are Daniel Baldwin, Jesse Plemons, Joe Penny and Jessica Tuck (COLD CASE), Cynthia Watros and Gerald McRaney, (CSI), James Callis and Lou Diamond Phillips (NUMB3RS), Martin Landau (WITHOUT A TRACE), Craig T. Nelson (CSI: NY), Scott Bakula, Constance Zimmer and James Lesure (THE NEW ADVENTURES OF OLD CHRISTINE) and Brian Austin Green (CSI: MIAMI).

The following are CBS's May season finales and cliffhangers.

Sunday, May 10 (8:00-9:00 PM, ET/PT) THE AMAZING RACE 14-The final three teams race from Beijing to Maui for the final leg and the chance to claim the $1 million prize. Phil Keoghan hosts.

Sunday, May 3 and Sunday, May 10 (9:00-10:00 PM, ET/PT) COLD CASE-The music of Pearl Jam will rock throughout the two-part sixth season finale episodes. This marks the first time the series has exclusively showcased the music of one artist in more than one episode and the first time Pearl Jam has permitted a program to use selections from their entire catalog of music. In the episodes, Rush (Kathryn Morris) and the team delve into the 2005 murder of the first female cadet of a local military school who didn't live beyond her first semester. In Part Two, the stakes of the case are raised after the cadet's unknown killer commits a shocking act against Rush designed to thwart the investigation. Daniel Baldwin ("Homicide: Life on the Streets"), Jesse Plemons ("Friday Night Lights"), Joe Penny ("Riptide") and Jessica Tuck ("Judging Amy") guest star. (Season Finale)

Sunday, May 10 (10:00-11:00 PM, ET/PT) THE UNIT-The Unit must locate and diffuse three sets of dirty bombs headed for unknown locations across the U.S. Meanwhile, the team prepares for a wedding of one Unit member and the end of a marriage for another. (Season Finale)

Monday, May 11 (8:00-8:30 PM, ET/PT) THE BIG BANG THEORY-As he prepares for a three- month science expedition, Leonard (Johnny Galecki) and Penny (Kaley Cuoco) reconsider their feelings for one another. (Season Finale)

Wednesday, May 13 (8:00-8:30 PM, ET/PT) THE NEW ADVENTURES OF OLD CHRISTINE- Christine (Julia Lous-Dreyfus) learns some shocking news about New Christine's father after the two of them rekindle their romance at Richard (Clark Gregg) and New Christine's (Emily Rutherford) wedding. Scott Bakula ("Quantum Leap") returns as Papa Jeff, New Christine's father and Christine's old flame. Constance Zimmer ("Entourage") returns as New Christine's sister. James Lesure ("Las Vegas") guest stars as a wedding guest and potential hook-up for Barb (Wanda Sykes). (Season Finale)

Wednesday, May 13 (8:30-9:00 PM, ET/PT) GARY UNMARRIED-Gary (Jay Mohr) and Allison's (Paula Marshall) frustrating personal lives lead them back into the bedroom...repeatedly. (Season Finale)

Thursday, May 14 (9:00-10:01 PM, ET/PT) CSI-The CSIs investigate a series of murders tied to a scam involving valuable poker chips from a long-gone casino and Det. Ray Langston (Laurence Fishburne) must use deadly force for the first time in his career as a CSI. Cynthia Watros ("Lost") and Gerald McRaney ("Jericho") guest star. (Season Finale)

Friday, May 15 (8:00-9:00 PM, ET/PT) GHOST WHISPERER-When a ghost pays Melinda (Jennifer Love Hewitt) an unexpected visit, she worries for her unborn baby. Wedding bells ring for Melinda and Jim (David Conrad). (Season Finale)

Friday, May 15 (10:00-11:00 PM, ET/PT) NUMB3RS-When Amita (Navi Rawat) is abducted, Don (Rob Murrow) and the team's frantic search leads to a charismatic sociopath, but it is up to a distraught Charlie (David Krumholtz) to discover what's behind the suspect's bizarre plans for her. The situation causes Charlie to reassess his relationship and future with Amita. James Callis ("Battlestar Galactica") guest stars as the cult leader. Lou Diamond Phillips ("La Bamba") returns as Agent Ian Edgerton. (Season Finale)

Sunday, May 17 (8:00-10:00 PM, ET/PT) SURVIVOR: TOCANTINS--The special two-hour finale begins with four remaining castaways vying for the $1 million prize and title of "Ultimate Survivor." The finale is followed by a one-hour live reunion show hosted by Jeff Probst.

Monday, May 18 (8:30-9:00 PM, ET/PT) HOW I MET YOUR MOTHER-Ted (Josh Radnor) gives Barney his blessing to finally profess his love to Robin (Cobie Smulders). (Season Finale)

Monday, May 18 (9:00-9:30 PM, ET/PT) TWO AND A HALF MEN-Charlie (Charlie Sheen) starts to question his relationship with Chelsea (Jennifer Taylor) when he hears that Mia (Emmanuel Vaugier) is back in town. Meanwhile, when Judith (Marin Hinkle) goes into labor, Charlie, Alan (Jon Cryer) and Herb (Ryan Stiles) rush her to the hospital. (Season Finale).

Monday, May 18 (9:30-10:00 PM, ET/PT) RULES OF ENGAGEMENT-Jeff (Patrick Warburton) wonders if he and Audrey (Megyn Price) are lacking spontaneity in the bedroom. (Season Finale)

Monday, May 18 (10:00-11:00 PM, ET/PT) CSI: MIAMI-Horatio (David Caruso) fights to save Yelina (Sophia Milos) while Delko (Adam Rodriguez) goes against Calleigh's (Emily Proctor) pleas and helps his dangerous father with life threatening consequences. Brian Austin Green ("Beverly Hills, 90210") guest stars as an alleged carjack victim. (Season Finale)

Tuesday, May 19 (8:00-9:00 PM, ET/PT) NCIS-Ziva's (Cote de Pablo) homecoming to Israel with Gibbs (Mark Harmon) leads to a tense reunion with her father, the enigmatic and powerful head of Mossad. As this delicate situation escalates, Gibbs is forced to make a decision that sends shockwaves through NCIS. Michael Nouri ("Damages") reprises his role as Ziva's father, Mossad Director Eli David. (Season Finale)

Tuesday, May 19 (9:00-10:01 PM, ET/PT) THE MENTALIST- Lisbon (Robin Tunney) suspects that serial killer Red John is drawing Patrick Jane (Simon Baker) into a trap when the CBI team investigates the murder of a young girl and the abduction of her twin sister. (Season Finale)

Tuesday, May 19 (10:01-11:00 PM, ET/PT) WITHOUT A TRACE- The team searches for a man who disappears after a late night ocean dive that includes stolen drugs and three dead bodies. Meanwhile, Danny (Enrique Murciano) and Elena (Roselyn Sanchez) take their relationship to another level. Academy Award winner Martin Landau ("Ed Wood") reprises his role as Frank Malone, Jack's father. Adam Kaufman, Poppy Montgomery's real-life boyfriend, reprises his role as Brian Donovan, the father of Samantha's son, Finn. (Season Finale)

Wednesday, May 20 (8:00-10:00 PM, ET/PT) CRIMINAL MINDS-The BAU tracks a serial killer who chooses junkies, prostitutes and the homeless off the streets of Detroit and takes them across the border into Canada. After solving that case, another killer returns to exact his revenge. (Season Finale)

Wednesday, May 20 (10:00-11:00 PM, ET/PT) CSI: NY-A member of the team is murdered after a deadly group of kidnappers snatch Robert Dunbrook's (Craig T. Nelson) son while he is being transferred from prison to court. And, if that loss isn't enough, the life of another CSI is threatened. (Season Finale)