Fixed gears are fun, but they are another ball of wax, altogether. Purpose built fixies usually run shorter cranks to prevent pedal contact with the ground, but usually, you just take the corners shallower.
The thing about a fixed gear is the sense of connectivity you sense with the bike and the road. Uncanny and hard to explain. The bike just responds. It's also about the simplicity. No shifters, no derailleurs, no silly bits that need adjusting or lubricating except a brake (if you're smart) and a chain.
Without the derailleur and extra chain sucking up power, these beasts climb really well.... super effecient. The only issue is descents, because your legs can't stop, your only choice is to slow the bike with the break, your legs, or, let it rip and pedal your behind off! Also, without all the other bits, what was once a 20+ pound bike is now a 17-18 pound lean machine!
Great fun and now that I have enough weight off, I think I might get mine out and ride it some more.
Mark