I've definitely been looking forward to it for quite some time as well. I just watched the last episode of Firefly over dinner, since my anticipation's already got me in a Whedon mood. I'll look forward to watching, and to discussing on here.
My favorite part of the first episode was watching the Mutant Enemy who's-who during the opening credits. I hadn't seen some of those names in far too long.
The episode itself was OK. Very boring and meandering until about 2/3's through it, when finally stuff started happening. I'm not sold on the series yet, but Joss Whedon usually needs a hand full of episodes for his series to pick up steam. We'll see.