SPECIAL GUESTS SEAN KINGSTON, TAYLOR SWIFT, UB40 AND THE MUPPETS JOIN THE FINAL FOUR CONTESTANTS FOR THE LIVE FINALE EPISODE OF 'AMERICA'S GOT TALENT' TUESDAY, AUGUST 21 FROM 8-10:02p.m. ET/PT on NBC

BURBANK -- August 20, 2007 -- Tuesday night each of the final four contestants, Butterscotch (Beatboxer/Singer), Cas Haley (Singer/Musician), Terry Fator (Ventriloquist) and Julienne Irwin (Country Singer), will receive a once-in-a-lifetime opportunity to perform with their icons when the live finale episode of "America's Got Talent" airs (8-10p.m. ET/PT on NBC).

Butterscotch and 17 year-old sensation Sean Kingston ("Beautiful Girls"), Julienne Irwin and country music artist Taylor Swift ("Teardrops on My Guitar"), Terry Fator and The Muppets, Cas Haley and UB40 will perform duets together.

Additional surprises include performances by "America's Got Talent" judge David Hasselhoff as well as this years Top 10 acts and much, much more.

At the conclusion of the finale episode one of the final four contestants will walk away with the million-dollar prize and will be named the most talented person in America. Jerry Springer hosts. Celebrity judges David Hasselhoff ("Baywatch"), U.K. TV personality Piers Morgan and the queen of rock 'n roll management Sharon Osbourne ("The Osbournes") offer their opinions.

America's Got Talent" is produced by FremantleMedia North America and Cowell's SYCO TV. Cowell, Ken Warwick ("American Idol"), Cecile Frot-Coutaz ("American Idol"), Jason Raff ("Three Wishes") and James Sunderland ("Dancing on Ice") are the executive producers.