HOLY CRAP, CRUSHER HAS HASEO IN HIS SIGNATURE!
S**T! *Explodes*
Ahem... I always have a Dragon on my team, but really, who doesn't?
As a personal preference, ghosts are good, too. Banette, Dusknoir, Gengar, Mismagius, and Drifblim can all take you a pretty long way. Plus, they're all really cool (Except for Dusknoir. Nintendo, what did you do to my Dusklops?! *Shakes fist at sky*).