While Baker was one of the most disappointing Celtics of recent history, I can't put him on my least favorite list, probably out of pity, though. If you are drinking a bottle of Listerine before practice, it's obvious you are in need of serious help. During the brief span where he was sober here, he actually played extremely well for this team.
I have 2 least favorites, one for on-court play, and one for general attitude. For attitude it is Mark Blount, NO CONTEST. For on-court play, sorry but I gotta say Tony Allen - he drives me nuts.