I hate leveling the bed of a 3D printer, It seems to need to be done all the time.
This is a nice simple way to setup the leveling quicker. My 2 cents, I would spread the wires out to the sides, and maybe make this a permanent part of the bed. 🙂
http://www.thingiverse.com/thing:83283
Update, of course you could do this project where the bed automatically levels itself, its been a year since it seen an update, but it looks doable.
http://hackaday.com/2012/04/23/automated-bed-leveling-with-our-3d-printer/