Saw him first in 101 Dalmations. Hard to believe it's the same guy.
You must see Hugh Laurie’s portrayal of Bertie Wooster in Jeeves and Wooster. I read the books first, and when I saw Laurie’s portrayal, I immediately saw that he WAS Bertie Wooster. It took me longer to accept (the despicable) Steve Fry as Jeeves, but he ultimately pulled it off.
He costarred with Geena Davis in Stewart Little, too. (Michael J. Fox was the voice of Stewart).