Quicktime support in Media Center
Just going through some info kicking around in Outlook and found this tidbit about being able to watch QuickTimes movies (.mov) in Media Center.
QuickTime Alternative (via Omar Shahine):
QuickTime Alternative will allow you to play QuickTime files (.mov, .qt and other extensions) without having to install the official QuickTime Player. It also supports QuickTime content that is embedded in webpages.
Disclaimer: I haven’t tried it yet.