I started with Oshawott last time, but I'm going to do something different this time. And by different, I mean that I am not going to repeat any of the party members from Black version. Shouldn't be too hard; there are a lot of good Pokémon in Black 2/White 2. That's not to say I don't like Oshawott; in fact it's my favourite of the starters. I just want a change.
I'm starting with Snivy. I don't like Tepig. I've had enough with Fire/Fighting-type starters. Besides, Snivy has access to Outrage and Aqua Tail. I'm going to teach it those, Leaf Blade and Coil.
Now, I just need to figure out what else I'm going to use. I want a Lucario, but that's all I really know right now...