When I first saw face recognition on a mac, I thought 'I've got to have that!' and now, using wine, picasa 3.6 and a few of my pics, I have it!
Picasa 3 linux beta was good. It had Google integration(upload, Blog this, Sinc) but this is even better. I'm dying for the day when picasa on linux works with it's movie maker!
So, how did I do it? 3.5 for linux hasn't been released yet. So, I installed Firefox 3.5 for Windows, downloaded picasa 3.5(or was it 3.6?). I installed it and, depite all my suppositions that it would be slow and cranky under wine, it ran perfectly!