"Birds, bats and bees might be the most famous plant pollinators, but seeds like to hitchhike on clothing, making us surprisingly good seed carriers."
National Public Radio has a very interesting article on the ability of humans to move seeds around. Complete with video clips. You can read the article at:
http://www.npr.org/blogs/krulwich/2011/05/12/136211607/strange-things-happen-to-guys-who-wear-pants?sc=fb&cc=fp