A cynical Tom Hanks
That is pretty much the summary of how I would describe Bill Murray...he's like Tom Hanks, but a more cynical version of him. Not in a bad way...but let's just say that they could be in a movie together where they could play brothers...one who is more enthusiastic and cheerful, and the other is more negative and downbeat.
Gee, if that movie was made, it would be great! (In the 1980s, of course).