Wishingline, a web design studio, has done .Mac members a favor and collected most of the QuickPicks that are available on the web for Apple's Backup 3. There are quite a few QuickPicks out there for everything from ecto to PDF documents, Photo Booth pictures to Shiira bookmarks, OmniOutliner documents and much, much more. Wishingline went so far as to list a number of the QuickPicks individually, or simply offer an encompassing package of everything they could find (scroll down about midway on the page for these goodies).
The QuickPicks package is offered free from Wishingline, but remember: they didn't have anything to do with creating these (as far as I know); they just tracked them down and zipped them. If you want a QuickPick for one app or another, you should probably consult the app's author or check out these resources for creating your own.
[UPDATE: Scott from Wishingline dropped us a comment to let us know that the QuickPicks linked from Wishingline are, in fact, home grown. Thanks for some rockin' QuickPicks Scott!]