Uh, Second play-through currently has me using Samurott, Boldore (trying to turn it into a Gigalith, but nobody is available to help), Escavlier, and a Litwick that I'm training up since my others are such a higher level currently. I'll start using Zekrom when I get to him.
So many I want to use though. Next time I go through I'm planning on using an Emolga.