I'd love to maintain the functionality of Time Machine, but it just filled up my external harddrive. I know that I can "exclude" more data from being backed up, which should give me a little more time before Time Machine fills it up again... but how do i delete the unnecessary data that's already been backed up to my external hd? Time Machine is confusing me in general - wouldn't i need an unlimited amount of external space for it to be practical? If I rip a movie with Handbrake, Time Machine backs it up, and then I delete the original, I'm still wasting a lot of space on my external for no reason. Any solution to this? Thanks so much for your help.