Weight-Weenie Fixed Hillclimb Bike

And...

-Axle diameter and thickness
-Spoke count
-Number of spoke crossings
-Spoke thickness
-Spoke material
-Spoke type (j-bend or straight pull)
-Rim depth
-Rim width
-Rim material
-Fork leg stiffness and steerer tube diameter
-Chainstay and seatstay design
-Dropout alignment

Someone should write an article on wheel stiffness :)