Niles from Frasier and Martin Prince: Seperated At Birth?

"Here You Go Nelson!" *knocks invitation off desk* Martin picks it back up: "Here You Go Nelson!"

No way man! Niles (David Hyde Pierce) will always be Sideshow Cecil to me!

  Bob: You do know I used to have a...problem with trying to kill
       people.
Cecil: Goodness!  I had no idea!  For you see, I have been on Mars for
       the past decade, in a cave with my eyes shut, and my fingers in
       my ears.
  Bob: Touche, Cecil.

Dave