I checked his pevious work and didn't come across anything I remember seeing him in. I'll check you tube. Yea, it's hard to picture him with an accent after watching all the House episodes.
TIS
TIS, haven't you seen Black Adder? He was in "Blackadder the Third" and "Blackadder Goes Forth." In "Blackadder the Third," he played the Prince Regent, which was the most hilarious character.