SAM USES DENA TO HELP SHUT DOWN AN OFFICE CONSTRUCTION PROJECT BY SETTING HER UP ON A DATE WITH HER BOSS, ON ABC'S "SAMANTHA WHO?"

"The Butterflies" � Sam begrudgingly sets Dena up on a date with her boss in order to use her clueless friend to help persuade him to shut down a construction project that would destroy an endangered butterfly habitat. Meanwhile, Sam can't understand why Todd has been ignoring her ever since they shared a passionate kiss, on "Samantha Who?," MONDAY, APRIL 21 (9:32-10:02 p.m., ET) on the ABC Television Network.

"Samantha Who?" stars Christina Applegate as Samantha, Jennifer Esposito as Andrea, Kevin Dunn as Howard, Melissa McCarthy as Dena, Tim Russ as Frank with Barry Watson as Todd and Jean Smart as Regina.

Guest starring are Rick Hoffman as Chase Chapman, Joy Osmanski as Tracy and Morgan Murphy as woman protestor.

"The Butterflies" was written by Kim Duran and directed by Lee Shallat Chemel.

"Samantha Who?" is broadcast in 720 Progressive (720P), ABC's selected HDTV format, with 5.1-channel surround sound and Spanish subtitles via secondary closed captioning. A TV parental guideline will be posted closer to airdate.

This episode of "Samantha Who?" will be available on ABC.com the day after airing on the network for users to watch online.