FOX has launched an official Dollhouse website and wiki for fans. Not much there yet, but worth checking out. Here's the official site title art:
The Dollhouse wiki page for Tahmoh is woefully empty, so if you're so inclined, edit away!
A Television Without Pity poster saw the pilot for Dollhouse and posted some comments to the board, including his belief that Tahmoh was "perfectly cast." To read his whole reaction, see this post.
FoxSource has posted interviews with some of the attendees--including Tahmoh--at last month's Fox Eco-Casino Party to YouTube. They chat about Dollhouse, Tahmoh's exercise regimen, love of muay thai, etc.
See all the other Dollhouse cast interviews, including Dichen Lachman, Fran Kranz, and Olivia Williams over at Dollrific!