I crossed a threshold today. I purchased a 1 TB hard drive. In an external enclosure with USB, Firewire, and eIDE ports. It cost less (in actual dollars) than 1 MB of RAM in 1995 or so. And my first hard drive I bought back in 1990 was something like 40 MB.
It's got a lot of freakin' space, but it's necessary after I discovered that our XBox 360 can play video from pretty much any storage device plugged into the USB port. That'll make it easy to watch massive quantities of Doctor Who and Torchwood.