Got storage? You can get a Cavalry 500GB external USB drive for a mere $79.99 shipped. Granted, you'll have to wait on a $15 mail-in rebate, but you can spend the time filling this half-terabyte drive with all your videos, MP3s, backup files, and so on.
The NTFS-formatted Cavalry drive spins at a peppy 7,200 rpm and supports both Mac and Windows systems. Plus, it's stackable, so you can build a tower of terabytes if that's your thing.
Having recently experienced a near-catastrophic hard drive failure, I can't recommend an external drive highly enough. It's the fastest and easiest way to make a full-system backup, though obviously you can use it for media storage, data transport, and other purposes as well.
The rebate expires today, so don't wait if you're looking for .