I have been an anti-wave, anti-buzz but I just tried Google+ and it's great. I think this time Google really can kick FB. Great, simple interface and integrated to my gmail, picasa, contacts, gtalk it is definitely great!
I love the circles philosophy and UX.
One problem is the restriction on invites. Google+ is valuable to me if I can share things with others, just like I do it in FB right now. They have to enable invites soon or the early adopters will get bored and leave forever.