After doing 'Firefly' and moving on, I always wanted to be part of a series again. I love doing films, too, but there's just something special about being part of the team and feeling like you're actually a part of the family, and I always look to re-create that.
Everything I do in my life is very instinctual and in the moment. If I'm attracted to something, that's it. If I have reservations, those don't change till they're resolved. My first impression is how I go.