BROCKMAN ROCKS THE NEWS WORLD AND AGENT BART SIMPSON MUST STOP THE STINK BOMB BULLIES ON THE MILESTONE 400TH EPISODE AND SEASON FINALE OF "THE SIMPSONS" SUNDAY, MAY 20, ON FOX

Chris "Ludacris" Bridges, Kiefer Sutherland and Mary Lynn Rajskub Make Guest-Voice Appearances

At the Simpsons' annual dental check-up, Lisa gets an education in dental hygiene from a video starring Ludacris (guest voice Chris "Ludacris" Bridges) as Luda-Crest, a tube of toothpaste with a talent for rapping. The Simpsons stop for ice cream on the way home from the dentist, and when Homer purchases the 1-millionth ice cream cone, he is featured on Kent Brockman's nightly news program. However, the innocent interview turns into trouble when Brockman uses a shocking expletive and Ned Flanders wages an anti-indecency campaign. The Simpsons take in the dejected Brockman, and he and Lisa begin to devise a scheme for the anchor to make his comeback. Meanwhile, Principal Skinner ushers the students of Springfield Elementary into a new era of sneaking, snooping and snitching with the opening of the school's CTU � Counter Truancy Unit � with Lisa heading up the operation. Homer is sent on a mission to dispose of a container of yogurt so far past its freshness date that it could be toxic, but the reeking yogurt falls into the wrong hands. With the help of Jack Bauer (guest voice Kiefer Sutherland) and Chloe O'Brian (guest voice Mary Lynn Rajskub), Bart and Lisa must stop bullies Dolph, Kearney and Jimbo from releasing the ultimate stink bomb at the school's annual bake sale in the "You Kent Always Say What You Want"/"24 Minutes" episode of THE SIMPSONS airing Sunday, May 20 (8:00-9:00 PM ET/PT) on FOX. (SI-1814/1815) (TV-PG L, V)

Voice Cast: Dan Castellaneta as Homer Simpson, Groundskeeper Willie, Moleman, Mayor Quimby, Tooth Decay, Sqeaky-Voiced Teen, Stage Manager, Grampa, Young Male Employee, Arnie Pie, Rabbi Krustofsky, Krusty, Scratchy, Itchy, Sideshow Mel, Mr. Teeny, Rich Texan, Sideshow Mel, and Dracula; Julie Kavner as Marge Simpson, Selma, and Patty; Nancy Cartwright as Bart Simpson, Rod Flanders, Kearney, Ralph, and Assistant; Yeardley Smith as Lisa Simpson; Tress Macneille as Brandine, Miss Springfield, Kelly, Mother, 2nd Hygenist, Lindsay Naegle, Booberella, Cartoon Wife, Slacker Girl, Stripper, Dolph, Jimbo's Mother, Cosine, Helen Lovejoy, and Lunchlady Dora; Harry Shearer as Gum Disease, Principal Skinner, Kent Brockman, Ned Flanders, Supervisor, Male Executive, Announcer, Lenny, Mr. Burns, Rainier Wolfcastle, Birch Barlow, Smithers, Mr. Burns, and Mr. Largo; Pamela Hayden as Ling, Dental Assistant, Martin, and Jimbo; Hank Azaria as Cletus, Dr. Hwang, Hip Hop-Style Announcer, Bad-Ass Voice, Prescott Butterfat III, Tavis, Comic Book Guy, Bureaucrat, Muscular Goon, Homeless Man, Inspector Gadget, Carl, Slacker Dude, Moe, and Supt. Chalmers; Maurice Lamarche as Overweight Man.

Guest Voice Cast: Chris "Ludacris" Bridges as Ludacris, Kiefer Sutherland as Jack Bauer; Mary Lynn Rajskub as Chloe.