Just got my new hard drive for the TiVo and popped it in immediately. You can imagine what I was feeling when I first saw this. 30 minutes later though, the machine rebooted and everything was right as rain.
It's so amazing how fast technology moves. In October of last year, I bought a replacement 320GB hard drive for my Series 3 TiVo that cost about $120. After that one crapped out 6 months later, I bought a 1TB replacement drive for $90. At this rate, I'll be getting a 3TB hard drive for $60 in another 6 months.