i can't think of any that appeared in more than one but i can think of a few that have been in at least one;\njason biggs -the american pie trilogy\nantonio banderas -spy kids trilogy\nal pacino -the godfather trilogy\nice cube -the friday trilogy\narnold schwarzenegger -terminator trilogy\njason james richter -free willy trilogy\nsylvester stallone -rambo trilogy\nbruce willis -die hard trilogy\nwesley snipes -blade trilogy\nvin diesel - pitch black trilogy (yes the second one was dark fury they used his likeness and voice...\ni know this is not exactly what you asked for but i hope it helps...by the way the matrix is not a trilogy...did everyone forget about the animatrix