Carson Daly drops by just as Rachael finishes making her Vodka Still Works cocktail. Though Rachael's still "on duty," Carson's got hours before he goes on the air. "My talkshow doesn't start till everybody here's asleep," he says. "May I give it a shot?"

He gives Rachael's concoction a thumbs up, but it's going to take more than one drink to get Carson to sing. Rachael asks which song he would sing if he could sing it perfectly and have people cheer for him. "I love the song 'One' by U2," Carson admits. "Mary J. Blige just did a version. I couldn't sing it at all, I can't hold a note. But that would be the one I would try to learn and go sing in Central Park and try to raise some money."

Catch Carson weeknights on Last Call with Carson Daly on NBC. Can't stay up that late? You can check him out 24 hours a day -- and submit your own video for a chance at cash prizes -- on the "It's Your Show" Web site.