So I was goofing around as is my wont, looking through terabytes of videos for something to watch while not paying attention, and suddenly I somehow hit the spacebar with a video file selected, and lo, a window popped up and it began to play! I had no idea I could do that, and I still don't know what's playing the video file, but it's pretty spiffy. I also found it would open other files for viewing, and that's truly groovy as well, but I am not at all sure what is actually doing this. Is it Finder? Is it some nameless system utility? I'd always used VLC player for watching my videos, but now I have this other option and it's pretty darn cool. What system thingy is it that does this?