University of Florida student Andrew Meyer is Tasered and arrested after causing a disturbance at a town hall forum, which featured Senator John Kerry, at the UF Auditorium on Sept. 17, 2007.

See a longer version here:
http://www.youtube.com/watch?v=r7Qef8oPmag

Read more about the incident from a local source at
http://www.gainesvillesun.com/taser (less info)