While there are plenty of media collection/organizer applications for the Mac -- some well-known and glamorous, others quietly utilitarian and functional -- fans frequently swear by the merits of Bruji's 'Pedia suite for books, DVDs, music and games. Armed with a barcode scanner or your iSight, you can quickly and easily catalog all your media, manage your lending habits and wishlists, collect tips and walkthrough links for your games, export to a website, pull data from Amazon or other sources -- even browse your catalogs in the Finder via QuickLook. The individual organizer apps (Bookpedia, DVDpedia, etc.) are only $18US, and you can get the bundle of all four for $49 if you want.
Now Bruji has taken the obvious and exciting next step with Pocketpedia for the iPhone and iPod touch [App Store link], allowing you to create collections on your device or sync up from your Mac and take your catalogs with you. Having your DVD rental wishlist with you at the store sounds like a great idea; plus, you can quickly access reviews online if you're having trouble deciding what to rent or buy. Pocketpedia is a free download from the App Store, and will work just fine in standalone mode if you don't have the Mac apps to sync with. If only it could do barcode scanning from the iPhone's camera... *sigh.*