By Chris Strauss Joey Bartolomeo Jessica Herndon Tiffany McGee Chuck Arnold and RANDY VEST
Updated November 24, 2008 12:00 PM
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As the MTV series ends its 10-year run on Nov. 16, former veejays look back on memorable celeb visits

1 MARIAH CAREY‘S ICE-CREAM MELTDOWN
During a stunning ’01 visit, Carey pushed a frozen-treat cart onto the set, then did a striptease. Says Carson Daly: “I’m still shell-shocked.”

2 NICK & JESSICA BATTLE OVER BABY
In their Newlyweds 2003 heyday, Lachey and Simpson faced off in a doll-diapering contest (she won). “It never felt like a job,” says Daly.

3 JIM CARREY ROBS THE SET
On a visit to promote Dr. Seuss’ How the Grinch Stole Christmas, the actor “picked up our 8-ft. Christmas tree and walked right out,” recalls Vanessa Minnillo. “I thought, Did this just happen?”

4 DIDDY RUNS … AND RUNS … AND RUNS
Diddy, who was training for the 2003 New York City Marathon, sweated out an hour-long episode on a treadmill; guest Britney Spears volunteered to pat him down. “It was cute—and surreal,” says Minnillo.

5 TOM BUMPS AND GRINDS
“Getting someone of that caliber out of his comfort zone was amazing,” says La La Vasquez (with Cruise and Jamie Foxx in 2004).