I follow the Space program so I know a little bit of the history of Canada's involvement with the Space Shutte.
The first deployment of the CanadaArm in Space was from the Columbia in 1981.
In 1993 the CanadaArm was used to grab the Hubble Space Telescope from it's orbit and place it in the cargo bay of the Space Shuttle Endeavour for repairs. It was then used to release the Hubble back into Space once the repairs were done. I remember this like it was yesterday!
The Canadian Space Agency also deployed the CanadaArm2 on the International Space Station, I believe they did this sometime in 2001. It was brought up by one of the Space Shuttles, I just don't remember which one.
And for the latest Space Shuttle mission the folks at the Canadian Space Agency worked with Nasa to redesign the CanadaArm to be used to do sweeps of the craft using cameras to check for damage.
A big THANK YOU to our friends to the north for your support of the Space Shuttle program and the International Space Station.