I've got an 02 Stumpjumper FSR XC comp
Here's my list of upgrades:
EA-70 Handle Bar
Crank Brothers Egg Beater Pedals
LX Cranks
Thompson Seat Post
New bottom bracket
Panaracer Fire XC Pro tires

Will get on the 25th:
Mavic 223 rims with XT hubs
Hope Mini disc breaks

It's really my own personalized bike right now. The main reason i bought it was for the frame and fork. The only origional parts are fork,grips, steat, shifters and rear derailuer.......but then again who can really complain about XTR?