I've never been big on 'skins'.
I don't change browser skins. I rarely even change my screen background.
Last night, I was sifting through some of the 'popular' Firefox 3.0 compatible extensions (and testing out a few).
I had never used Gina Trapani's Better GMail before (and was curious whether it delivered anything more than the recent GMail Labs update).
Wowza! A few clicks on and off, and a better, very cool looking GMail .... (and it works just fine with the new GMail labs functions on or off).
Trapani is perhaps best known as the lead editor of Gawker's Lifehacker.com.