I downgraded to Snow Leopard after a day with Lion, it's got a bunch of terrible changes. Luckily, most of them can be fixed, Lion Tweaks, is a great app! The last thing holding me back is DVD player and Quicktime not playing nicely with my external monitor. I have my MBP hooked up to my 40" and I like to put a movie on the 40" and surf the web on the MBP, which is not possible in Lion because of the poorly implemented fullscreen mode. Does anyone know of a fix for this issue that uses DVD Player and Quicktime, I'm not a fan of VLC. I want true full screen, not maximizing the video window to fit the screen and having the monitor background showing through. Thanks!