Apple announced the official iPhone developer program a while ago. Unfortunately at the time they also indicated it would only be open to people in the United States at first. I decided to just sign up for it at the time anyways, assuming they would open up to Canada at some point as well.
Turns out they did. I got my official email last night saying I was accepted, so today I went and paid my $99 and can now develop iPhone applications (if I want to). So, maybe I’ll mess around with XCode on my vacation for an afternoon and see if I can make anything cool.