Everyone should go check out that crazy girl, Lisa, who is riding in the RONA-MS Bike Tour. It's a 200km trip, which is just insane under most circumstances, but she's doing it in August, when most sane people are indoors where there is air conditioning and couches on which to relax and watch TV.
Wait! She's not doing this for the hell of it, people* - it's to raise funds for the MS Society of Canada! Her goal is to raise $1000 for the charity, which is very noble and very doable. I would suggest that if you're interested in donating to the cause**, you should go read her post, follow the link, and sponsor her.
*She did last year, to which I say, "Dude! That's awesome!"