I picked the C's before the playoffs started but that's because I thought they would raise their game a bit in the playoffs. While their defense has still been great, it's been their opponents playing above their heads taking them to game 7's (w/the exception of Detroit who lets face it when they run into a team that's on their level usually wilts under pressure) That's not going to happen w/L.A because of Phil Jackson and the best player in the game, Kobe who loves extinguishing a teams hopes and dreams.. They are the best offensive team in the league who also present match up problems, they have good length and play pretty good defense. Plus they have good shooters all around and the best bench in the league. So Lakers in 6 and that is only because Boston has home court.
Btw, I also think the Spurs and probably even the Hornets could beat the Celtics if they had gotten to the Finals.