Pilots starring Cameron Diaz, Frankie Muniz and P. Diddy's valet have been given the green light at MTV, ensuring a fresh wave of shows for the cable network's prime original-programming spots.

MTV has ordered 10 pilots, including a street-racing series fronted by "That '70s Show's" Wilmer Valderrama and "Power Girls," in which celebrity publicist/convicted criminal Lizzie Grubman leads a team of young PR princesses. A Jay-Z-hosted music series called "Ultimatemash-ups" is also in development.

Diaz's series, "Trippin'," will find the "Charlie's Angels" and "There's Something About Mary" taking several friends to a different far-flung location in each episode, where they'll search for fun things to do and learn about environmental issues. The pilot features Diaz, fellow "Angel" Drew Barrymore and Diddy manservant Farnsworth Bentley traveling to Chile.

Speaking of Bentley, he'll host a pilot called "Borrow My Crew," in which a celebrity's entourage excessively fixes a viewer's non-life-threatening problem. The first episode, for instance, has Jennifer Lopez's stylists helping a girl prepare for her prom.

Muniz, meanwhile, is the creator and host of a wish-fulfillment show called "Granted." The "Malcolm in the Middle" star will enlist fellow celebs in helping three people per episode reach a goal, be it playing in a band or making a school team.

Both Diaz's and Muniz's shows have been in development since early this year.

Other MTV pilots destined for "Ten Spot" and "Sunday Stew" berths include "Show and Go," with Valderrama following teams of street racers engaged in legal competition; "House Arrest," wherein a famous person moves back home for a week and has to live by mom and dad's rules; and "Who Wants to Be a Superhero?," in which comic-book fans play out their heroic fantasies for a chance to be immortalized in ink by Marvel Comics legend Stan Lee.