Movie randomness

Did anyone out there know that:
1) Donnie Wahlberg is the star of "Saw 2"? And he was in "The Sixth Sense" as well?
2) In "Sin City" the priest that Marv kills in the confessional is played by Frank Miller himself?
3) Seth McFarlane has played two different characters on Star Trek: Enterprise, and two different characters on The Gilmore Girls.