You can't go wrong with Former Senator of Tennessee Fred Dalton Thompson, who was briefly a 2008 Presidential candidate. You've seen him in like a kajillion movies including such films as NO WAY OUT, HUNT FOR RED OCTOBER,CURLY SUE(?!?!?!) and DIE HARD 2.
That last one reminds of one of the funnest moments on THE SIMPSONS last season: Homer is running for office and ends up with a house full of reporters and other politicians who want to get into bed with him (Ewwww!). Anyway, he gets fed up with everyone and kicks them all out of the house. Homer then notices Former Senator Fred Dalton Thompson hiding behind a potted plant and barks for him to leave. Thompson, in a pleading voice", proclaims: "But Homer I was in DIE HARD". In response, Homer snorts derisively at him and mutters, "Yeah, DIE HARD 2