The actors Lance Henriksen and Bill Paxton both show up in The Terminator (Henriksen as a police officer, Paxton as one of the punks the Terminator beats the s@#t out of at the beginning). They are the only two actors in film history that have fought an Alien (AKA, xenomorph), a Predator, and a Terminator (both actors appear in Aliens, Paxton appears in Predator 2, and Henriksen was in Alien vs. Predator).