All the free themes on this website, are updated so that they support the Gravatar feature when used with WordPress 2.5 and above.
Enjoy.
WordPress Theme Shop
Buy and download high quality WordPress themes !
Who is behind all this?
Sadish Balasubramanian is the one who created the themes and this website for selling them.
He is an Indian guy, currently living in the USA along with his wife and daughter. He has created many popular WordPress themes like MistyLook, TerraFirma, SpotLight etc.
He believes WordPress Rocks!.