Yeah. Voiced by http://www.youtube.com/watch?v=cpxQurEJAxk&feature=related. I'm surprised some reference wasn't made to having a problem with (or even a quest to deal with) some Kids in the Hall.
Yeah, I was watching the credits and decided to look at the VA for Yes Man, I was suprised when I sw Dave Foley instead of Jim Carrey.
Oh well, he did a good job.