Nervous about playing DJ all night (and subjecting yourself to the silent judgment of that opinionated rock-geek coworker you invited)? Ask guests to bring along their iPhones and take turns choosing the tunes. Plenty of people love to play mixmaster, and your best friend's ABBA-infused workout mix might be just the thing to bring out the dancing queen in guests better known for warming the bench.
There are many upsides to throwing a really great party -- the rush of self-satisfaction, the guaranteed invites to your guests' future bashes, the matchmaking/networking/stand-up-routine-honing that you facilitate. The downside? It's 2 a.m. and your college roommate and your husband's golf buddy are still rooted to the couch. How are you supposed to get rid of stragglers without hurting anyone's feelings? (You did invite them, after all.) Try turning up the lights in the main areas to get the move-along message across. (Go ahead and turn off all the lights in unoccupied rooms, too.) Then turn the music way down -- or completely off.