Lou Piniella! He's got the Rays playing .414 ball, baby! They're only 24.5 games out with three weeks to go. That's almost striking distance in a tough AL East.
I think Guillen probably already has it won, but I'd vote for Wedge if I had a vote. He really righted that ship when things weren't looking great in the early season. I think they're a very dangerous team if they can (and I think they will) get into the playoffs. I wouldn't want to play them, that's for sure.