Woohoo!  I got my bike computer working today.  I'm not exactly sure of everything it can do, but it can do quite a lot.  At the very least I got distance and average speed.  I think it'll give me altitude changes and maybe even maps.  Very cool.  I've had only a few 10 mile rides so far this year, and I'm really only guessing that they're ten miles.  I'm not sure why, but knowing how far I go really inspires me to want to go further!