Should these be embarrassing roles that the actors don't want to talk about? Because I don't think Meg Ryan and Tim Robbins mind their bit roles in Top Gun. It would be more along the lines of Texas Chainsaw Massacre: The Next Generation, which Rene Zellweger won't talk about but Matthew McConaughey says was a lot of fun.
Speaking of Chainsaw, Viggo Mortensen was in Texas Chainsaw Massacre III. And Young Guns II.