Speaking of the "Funniest Man on TV," Chappelle has been added to the list of celebs slated to appear at the 2004 MTV Video Music Awards, airing Aug. 29 live from Miami's AmericanAirlines Arena. He'll be joined by fellow presenters Paris Hilton, Tony Hawk, Lenny Kravitz, Ludacris, LL Cool J, Jon Stewart, Ashlee Simpson and Sean "P. Diddy" Combs.