During a recent interview for the U.K.'s Heart Radio, the actor was asked what it was like to play Mike Hannigan on the popular TV sitcom. After insisting the entire cast - comprised of Jennifer Aniston, Courteney Cox, Lisa Kudrow, Matt LeBlanc, Matthew Perry, and David Schwimmer - was "really fun" and "great," Paul admitted that he felt quite awkward filming the finale in 2004. "The whole thing was a bit surreal, I must say, to be a part of that because I came on really at the end.”