Pat Haden in Hollywood

Rams quarterback only appeared in one Hollywood production which was the TV Series The Love Boat as himself , a LA Rams quarterback

Vince Ferregamo in Hollywood

Vince Ferregamo only had a few roles in Hollywood, and one, it seems he was edited out of.

In the Dynasty TV Series he was playing a quarterback some mobster owners didn't like and apparently was injured by those mobsters.  His character was William Hobart the quarterback of the Denver football team, but his scene never aired. He was not credited, but IMDB does mention that he was in the show. However, a review (very painful review) of the show reveals his scene must have been edited out.

In a TV movie Policewoman Centerfold in 1983 he played himself.

In the HBO series First and 10, in 1986 he played Joe Manetti, a quarterback who gave some teammates a bad stock tip.

Defensive Linemen in Film: Joe Greene

The Black Six was a blaxploitation film featuring six NFL players as peaceful motorcycle riders who have to right a great injustice. Greene's role is often used as comic relief in the film, though in the fight scenes he holds his own. He does kiss one racist during a rumble stating "Peace and love, brother". 

Greene and Willie Lanier

 

Mercury Morris, Carl Eller and Joe Greene.

Peace and love, my brother

In 1975 Greene played the heavy in Lady Cocoa which starred 49ers wide receiver Gene Washington.

Greene waiting to do bad deeds in Lady Cocoa

Greene carry shotgun trying to shoot Gene Washington

Greene also starred in The Steeler and the Pittsburgh Kid in 1981:

That film was based on the famous Coca-Cola commercial and the story is that of a nine-year-old boy who learns much when he is temporarily adopted by football star Greene.

Greene also played himself in All the Marbles, Fighting Back: The Story of Rocky Bleier, Smokey and the Bandit II.

Defensive Linemen in Movies: John Matuszak

In North Dallas Forty Raider defensive end John Matuszak plays O.W. Shaddock, the left guard for the North Dallas Bulls. It is not the typical "heavy" role that often seems to go with football players in movies. 

Here are a couple of clips from the film. The language is definitely NSFW:

Matuszak's other popular role was as "Sloth" in The Goonies:

Right after North Dallas Forty Tooz starred as "Tonda" in Caveman with Catherine Bach and Ringo Starr.

Command 5 was to be a series. Matuszak played "Nick Kowalski". According to IMDB Command 5 is based on this concept: "Captain Blair Morgan is a military intelligence man, who wants to see some action, and if the military can't provide with some, he is recruited by a group that wants to form a crime-fighting unit that they want to send into areas that are ill-equipped or manned to handle certain criminals. He selects Jack Coburn, Nick Kowalski, J.D. Smith, and Chris Winslow, cops who are deemed loose cannons by their respective departments. But whose unorthodox behavior and methods, Morgan feels is necessary to combat the types of criminals that they are going to go up against."

   

In his acting career he also tangled with fellow defensive end Fred Dryer in Hunter:

He played another football player in "The A-Team" with Joe Namath, Jim Brown, Alan Autry and Mr. T.

In the HBO series 1st & Ten: The Championship Matuszak played the aptly named "John Manzak" where he go to choke "T.D. Parker". Many wish this was John Matuszak and not John Manzak and instead of T.D. Parker it was O.J. Simpson.

For Matuszak's complete filmography go to IMDB

Defesive Linemen in Film: Cedrick Hardman

Cedrick Hardman, San Francisco 49ers defensive end as the heavy is Stir Crazy.

Cedrick Hardman, Gene Wilder and Richard Pryor, 

In 1972 he played himself in "The Candidate":

Bob Waterfield and Hollywood

Bob Waterfield on had three acting credits to his name, but his Bob Miller role in Jungle Manhunt was pretty meaty:

He played himself in 1953's Crazylegs 

And a Professional Football Player in 1948's Triple Threat: