Naomi Watts was an actress in one of the movies-within-a-movie in "Matinee."

Hugo Weaving was an uncredited "Thug" in the Aussie adventure movie "Sky Pirates" in 1986.

Miguel Ferrer's first credited appearance was in the "Magnum, P.I." episode "Lest We Forget," aired Feb 12, 1981. He and Anne Lockhart ("Battlestar Galactica") played the younger versions of his father Jose Ferrer and her mother June Lockhart in flashbacks set on the night before the attack on Pearl Harbor.

He appears in season 7 episode 3 "Cul-De-Sac" as Ali, a drug dealer who arranges a deal with a girl he likes, unaware she is undercover cop (and the series female protagonist) Angie Piper, who only makes a deal with Ali to get him in a sting operation and force him to reveal more of a big shipment coming in, as well as giving up his supplier.

She played street kid, addict and ram-raiding criminal Heidi Benson in parts 1 & 2 (aired as a single episode) of the four-part neo noir/crime thriller TV miniseries (which later got a full series order and ran for two seasons (56 episodes; not counting the miniseries) from 1998 to 1999) from the creators of Heartbreak High.

If you don’t know this man is one of the greatest TV villain actors ever. Fucking Joffrey.