Somehow we missed this. Happened a couple of days ago in Guelph.
A 19 year old woman (and protester) tackled the torch bearer and has been charged with assault.
http://www.cbc.ca/canada/toronto/story/2009/12/28/ontario-torch-relay-fall.html
And for extra giggles, you can read the people on the CBC comments explain how the torch is somehow a Nazi symbol. You wish I was kidding.