Some, off the top of my head, that were probably already mentioned:
*Sid Haig was a gangster in the James Bond film Diamonds are Forever
and is known by many of us 80s kids as the villain from Jason of Star Command
. (And, he now plays characters in Rob Zombie films).
Sid Haig was also in Coffy
w/Pam Grier...also playing a villain.
*Roger C. Carmel was in the Clint Eastwood film Breezy
. The friend of the fifty-something protagonist portrayed by William Holden who is dating the onscreen girl of the title who is around 17 years old.
*I still find it funny that Fred Williamson was in an episode of Star Trek
. Williamson was in a lot of films in the 1970s, and in later years. In That Man Bolt
, he portrayed the courier Jefferson Bolt who came across a love interest in Hong Kong portrayed by another Trek performer, Miko Mayama.
*The actor who portrayed Cloud William from 'The Omega Glory' I recall was a detective (?) in Chinatown
with Jack Nicholson. He was also a villain in the Paul Newman film Harper
*Pamelyn Ferdin, who I understand was big during the 70s, voiced Lucy van Pelt in a Charlie Brown episode I used to watch frequently as a little kid - Play it Again, Charlie Brown
. I also saw her - thanks to Youtube - in episodes of Vega$
, Odd Couple
, and Streets of San Francisco
. (I understand that she is a big animal rights activist right now, and seems to be pretty serious