Building MTB Single Speed

have a look at my mates Surly Karate Monkey.
Mavic on the hubs and 29 er wheels,
titus bars,
old skool hopes,
pace fork and a few other nice bits.
This bike is so well balanced, it looks quite long, but the wheel base is actually short so climbs like a beast as well as tracking magnificently at speed.

Not as nice as my Marin though ;-).