g-phone all it’s cracked up to be?

I’ve just been watching this video about the the new T-Mobile G1 and I don’t see it.

I have an iPhone and I can’t see anything that I’d actually use that the “g-phone” provides. I mean it’s a reasonable phone, but the UI looks clunky to me. The fact it’s Android is pretty cool as it should mean it’s really extensible, but currently I’m still not convinced and I’d been quite looking forward to the first Android phones, but frankly I think I was expecting something more.

I might be completely wrong, in fact I actually hope I am but from the videos I’m just not convinced.