When circumstances permit, I often walk to work. I did it as a WIC Nutritionist in Tucumcari (1 mile), a SysAdmin for ENMU in Portales (5 miles) , and a Linux Support person at Dell in Oklahoma City (4 miles). I cannot do it now as I am about 15 miles from work, but I was always looking for good things to listen to as I walk (when I am not recording my scattered, heretical thoughts).
If you like TED talks, you must understand that I think they are a mixed bag of psychobabble with some nice gems. If you want far more intelligent presentations that are consistently high-quality, I will happily point you to the excellent Long Now Seminars that are sponsored by the Long Now Foundation. As always, there are many times that I disagree with concepts spoken about, but it never fails to get me thinking!
Forward and Upward!