No one could ever discount Miss Piggy!! And she may have a few words to say to you Michael about her acting abilities!!!
But if I could think of some "real" person who would be an unlikely murderer....how about James Garner....or Bill Cosby...or Tony Danza...Alan Alda...or Doris Day...???
And to take this a step further.....wouldn't it have been great to see the wonderful Vito Scotti as a guest murderer!!....oh the fun he and Peter would have had filming that one!!
Cassa, with Vito Scotti as the guest murderer, now that's the one I wouldn't mind sitting in on! Say, how about Tom Hanks, Billy Crystal, Danial Stern, Jack Palance and Joe Pesci?.