I bought the Nike+ kit for my otherhalf.....it only works with Nike+ trainers and ONLY ipod Nano, I got him an 8gb black one and he loves it....tells him how far he's gone. Have a look:
http://www.nike.com/nikeplus/
it's pretty cool and the nanos are teeeeeeeny. I need more space for my music though.
I recently accidentally drowned my old black and white screen 20gb ipod....when I am rich, I will buy a video one.....films on ipod.....sounds like fun to me!!