Alan Tudyk interview at BackStage.com.
Nice description of his bio and career. Focuses much more on his movie work, but "Firefly" and "Serenity" get mentioned with love. "A lot of people recognize me from [the short-lived cult TV series] Firefly because it's the one I don't have an accent in; it's my own voice. Also, those fans are very... enthusiastic is the word I would use."