Trackhead's tutorials about how to convert a pair of Kennedy XC spikes into road racers by gluing a Vibram (at the time, only a brand of soles for work boots, not a producers of goofy finger shoes) soles onto them. There were a ton of threads about minimalism long before Born to Run started the fad.
The "All Wejo Team" (a list of every regular poster's PRs)
Somerunnerdude running the USATF 1500 in board shorts