Ok, so despite having my iMac for the past three months, I've never actually watched a DVD on it. Yesterday, I put one in, and the screen saver kicked on while I was watching it. I have my screen saver setting to come on at 15 minutes of inactivity. On my PC, there is a setting to disable the screen saver while watching videos. Is there the same option for the Macs? I'd like to keep my option to have my screen saver to kick on at 15 minutes, but not during movies. Thanks.