The first time I built a PC, and the first time I mounted a heatsink, was to one of these bare die AMD CPUs. I heard about the fragility of these, and must have read the directions about ten times, and paused and checked each step about five times while doing it. It came out fine, but it was nerve wracking as hell.
Overclocking an Athlon XP 2500+ to a 3200+ was pretty cool. Easiest overclock ever.