i'm sure there's a way of making Steve Martin the answer to those four too, but I just can't do it.
Bowfinger - movie producer.
Muppet Movie - played himself, and he Is an author too (that cheating?)

Dirty Rotten Scoundrels - cons women out of their riches...kinda like thieving...
Sgt Bilko - plays a sergent, which is kinda like a cop.....
aw heck, now i know why i'm only 'Just Hatched'