Geeky stuff follows.
I had a neat idea, cobbled together from a few other ideas. I could build the old anysize.org computer (the PC, not the Sun) into a gigabit intelligent router/file server for home.
The main problem I see with that is that I have 3 or possibly 4 PCI slots I could use for network cards. I remembered those come in 4-ports-per-card versions, but in Gigabit those are still $5k! Fortunately, I found dual Gigabit cards, refurbished, for $95 each. That would give me 6 or 8 ports, plenty.
Alternately, I could output to a gigabit switch and get away with just two standard Gigabit cards.
An intelligent router could do nifty things with our home network, and a fast one would allow very nice speeds for filesharing large files.