Andrew Johnson has been diagnosed with Early Onset Parkinson’s Disease and recently underwent deep brain stimulation (DBS) surgery to implant a brain pacemaker that supplies his brain with regular and reliable electrical pulses. In this incredible video, Johnson turns the pacemaker off and you can see the effect that DBS has had on his life.

Understatement of the year at the end of the video. Wow. Johnson writes about his experience with Parkinson’s on his site, Young and Shaky. (thx, eamon)