Well, the guy has had a pretty solid career as a character actor, usually playing slimy bureaucrats, cheating husbands and similar parts (he's an undercover HYDRA agent within SHIELD in Ant-Man, for example), kind of the opposite of his role in this film (which was his breakout).
The woman in the last two shots was one of the most prominent indie actresses of the era. She later transitioned into directing, making one fairly well-known movie, but was murdered before it came out.
The woman in the foreground of the second shot starred in a very high-profile TV show, which recently got a movie prequel.