olyar noted that Joss Whedon has been tapped to direct The Avengers. This should make a lot of nerds very excited, and begin rampant speculation on Buffy/Firefly/Horrible universe actor cameos. Hope the script doesn't suck.
I've never been canoeing before, but I imagine there must be just a few simple heuristics you have to remember... Yes, don't fall out, and don't hit rocks.