My right as it's the one I drink my coffee with, pick my nose etc....
Joking aside though AK seems to work well for me, even more then pocket pairs on some occasions. At UB I hope not to get KK or AA for the simple reason these pairs always come out together and whichever one I get usually gets beat by the other.
AA and KK down to 99 has worked well for me so far at pokerstars though.
46clubs use to be my favorite in a multi-way pot because that starting hand was lucky for me in one night in a live tourney.
It gave me through the course of the tourney, a full house, 2 pair, a flush and a straight which gave me second in the tourney.
But as it stands, I now realize that my favorite hand became a favorite just that one night and really has no value on a poker table as a legit starting hand, so I would have to say that my favorite hand is any hand that wins me the pot.
edit: I would also like to add that I had been a donkey during the time of my lucky hand but now I know how to play better poker .