Yeah, that's a bit of an old rumor, common knowledge, whatever you want to call it. Hollywood folks like the Mac for FCP and its ease of use, so they decide to promote it whenever possible.
I think it's funny when they splice a scene from multiple takes at different times, and you can tell because of what the computer's doing. Like on 24, they booted up a G4 and showed it up one moment, then the next it was still booting! I was like, wait a minute...
*Yawn* Time for bed... ::sleepy::