I just bought my first 1TB harddisk (Samsung HD103UJ).
My first HD was a 100MB harddisk for my Amiga. That was roughly 18 years ago. 100MB was an insane amount at that time.
Today, recoding one eposide of a TV show as MPEG 2 Transport Stream takes 13.6GB. Gigabytes! At PAL resolution!
I wonder how long it will take until I can buy a 10 TB disk. My bet is 2013.