As always, I will be supporting the Brits (teams and drivers) and underdogs.
So that means McLaren, Williams, Virgin and Team Lotus (although Team Lotus for being an underdog sticking it to the blindly corporate and childish behaving Renault team, rather than being British, as they aren't, really..), and Hamilton, Button and Di Resta (for being both an underdog and British).
I also like to support the new guys. I like watching GP2 and its good to see some of them up in F1. However, Im not a fan of Maldonado (he won GP2 by being there so long he naturally went to the top through experience, rather than raw skill), but Im looking forward to seeing what Perez can do. The ban on testing makes it very difficult for GP2 drivers to migrate into F1 and stay, so they deserve some support.
But, to narrow it down, Ill be supporting McLaren, Team Lotus, and Di Resta.