I think video is the big application - it actually makes gigabit more compelling for the home than for the office. I'd put the priority for implementing gigabit networking is:
1. data center
2. home video applications
3. office desktop
4. home office
5. home

I only get 150mbps on my GigE at home (no jumbo frames). That's a little less than 20MB/s. A DVD ISO is usually 8GB or 7 minutes to transfer. A 2 hr broadcast or cable HD movie is 17GB or 15 minutes to transfer to my laptop from my "archive" on my file server. You can double that for 100mbit ethernet.