One of the first tricks I learned on a BMX bike was a one-footer. This meant you had to jump, take one foot off one of the pedals and put it back before you landed. It was all that difficult but in days when no-foot, double back-flips are passe, it seemed worth mentioning -at least in the context of this Danny MacAskill video.
Please try this at home, or in the park or where ever you want. You can see how easy it is.