Check out this spidermobile rolling ('climbing') up the side wall of a building. The video has been posted by Mr. Jose Berengueres (of Tokyo Institute of Technology, cleverly abbreviated to 'titech'); Mr. SpiderMan (as Teng Li calls him) has also posted another explicatory video on interesting features (aka hair) on geckos' feet that allow them to walk upside down on a ceiling. In the video, you will see how this understanding can be applied to enable humans to
act like a spiderman climb up a vertical wall.
While on the topic of fun videos, take a look at this very funny advertisement.