This dude is everywhere. The publisher of a social-events newsletter called "Jet, Set, Go," Marcus Sims always appears at the city's coolest events, drink firmly in hand. His social database is bursting with 1,000 names and phone numbers, and he name-drops like Trump drops fifties. He even hosted a VIP party for Halle Berry's Cleveland homecoming in March -- and, he claims, now knows the star. Even if he doesn't, if you allow him to tell the story, that "in" with a nightclub owner or unlisted phone number could suddenly be yours. You'll just have to schmooze with the city's best schmoozer to get it.