Well, some days are better than others. Especially, when you are as sapped as I am for building time. So, I cruise over to Brickshelf.com often to view the recent activity of other builders. Maybe they can spark some creativity in the LEGO world.
Yesterday, I spotted these very cool works by 222Doc. The "TRiTracks" crawler and a folder full of "Mobile Defense" robotics. The rubber/foam pads on his track system are his own creation and they look glued. LEGO likely has a few plans for the pin holes in the track links. There is also a pretty awesome walker there which combines elements from the RIS and NXT systems.
Only a link...since I couldn't find any contact information for 222Doc. Maybe he will see this and let us post a picture or two.