Where to Watch Old Good Eats?

I've been a fan of the show for years. My girlfriend has never seen the show, and that needs to change.

1. Where can I legally watch full episodes of the original series? Obviously I'd love free, but if I have to pay a few dollars to watch an episode legally, I'm ok with that.
2. What episode might you recommend I show her first so she has a sense of the amazingness of this show? Some of the recurring characters (W, French Chef), puppets, food science diagrams, etc.