I recently started using a Mac at home. Last night I was moaning about the lack of a right mouse button to a friend. He assured me I could easily put a two button mouse on and it would work. Not wanting to do this we discussed a few option keys. He mentioned a few I hadn't discovered on my own. This morning he send me a link to a huge list of shortcuts. Handy.
http://developer.apple.com/documentatio ... ion_1.html