Dodgers/Cubs the best for me as well since it's a team I hate and all my friends and family from back home in Illinois love, versus my 2nd favorite team, favorite in the N.L., and current home team.
Though the most important thing for me in the playoffs is whether or not the White Sox advance, and it'll be interesting to see if they carry over their late season momentum. It'll also be interesting to see how the young, scrappy Rays perform in their first playoff excursion, which I hope is "very poorly".
I'm watching as much baseball as I can. I'm watching the current game to see how the Brewers perform in their first postseason in 26 years (so far, it's not pretty) and I have a vested interest in the series because my former Glenwood High School schoolmate, Jayson Werth, plays for Philly. I want to see him do well.
The only series I'm really not interested in is Angels/Red Sox. I hate the Angels for obvious reasons, and I'm completely indifferent to the Red Sox, though I hope Boston sweeps. I'll watch the games if I don't have anything else to watch, or any activities going on, but that's it. Game 1 will be on tonight while I'm at the gym, so I can keep tabs while working out, anyway.