Alexander will play Planet Hollywood Resort & Casino's CHI Showroom Feb. 11-14, Feb. 25-28, March 4-7 and March 11-14, 2010. All shows begin at 7 PM.

The show casts the award-winning actor as Donny Clay, "the world's fourth-best motivational speaker, [whose] world famous seminars entail hilarious evenings full of comedy, music, self-help and partial nudity all combined to leave you laughing as you discover the YOU inside of you," according to press notes.

The Donny Clay Experience, press notes continue, is an "interactive, partially improvised comedy romp where the audience is part of the show. Alexander . . . employs song, video and comical moments that will inspire everyone into having a truly unforgettable evening."

Best known for his work on the Emmy-winning TV sitcom "Seinfeld," Jason Alexander is also a Broadway veteran. He made his Broadway debut in the original cast of Stephen Sondheim's Merrily We Roll Along, and he also appeared in The Rink, Broadway Bound, Jerome Robbins' Broadway and The Accomplice. Alexander won a 1989 Tony Award for his work in Jerome Robbins' Broadway, and he also starred opposite Martin Short in the L.A. mounting of Mel Brooks' The Producers.