Ya, none yet (And I can't see that changing for the reason that Suicune touched on LOL)
In White I'm slowly filling my Pokedex, but I'm not really putting effort into it, I just evolve everything that goes into my PC, and I've been trading and importing Pokémon from my old games. Right now I have 312, but theres no way that numbers going up to 650 (?) anytime soon.