http://www.google.com/help/ig/art/gallery.html

from Gucci to Scott Draves

And now advertised on the Google.com homepage with the text "Make your homepage beautiful with art by leading designers".

Official Post: http://googleblog.blogspot.com/2008/09/more-eye-candy-for-igoogle.html

[moved from "Google showing link to new iGoogle Themes on home page"]

Just go to homepage now and see the link.

'Make your homepage beautiful with art by leading designers'

Seems like they will be using the homepage for promotions now on

That's not something new:
http://img502.imageshack.us/img502/8189/getdisorganizedgoogledebp7.gif