an oldie but goodie:

This is singlespeed I built up out of an older Sandvig Titanium frame. It's from back when Pro Mongoose was a real bike. Total weight, #21. This bike is so much fun, it's like dancing on the trail.

I was gifted this bike from a friend who had upgraded to a FS. I had mentioned casually that it would make a great project to turn it into a SS, and lo and behold, one day I went to her office and there it was for me.