Comment I personally think they shouldn't (Score 5, Insightful) 136
Personally I think they shouldn't.
Maybe author a movie, but not star in it. They where great at the time (70's and 80's) but now they would risk looking outdated and desperately trying to cling to some sort of success.
So either produce something truly "completely different", or no. Leave those outstanding movies (and of course TV sketches) as they where. Don't do a "Godfather III" or a "Indiana Jones and the Kingdom of the Crystal Skull" or a "Blues Brothers 2000" (and on). Please.
Bugger.