I aim to offset the ludicrous amount of Nutella I eat by running and working-out with kettlebells. So far, it seems to be doing the trick (so I guess I can up my Nutella intake). Also, what with living in Cambridge, I cycle pretty much everywhere.
I also love snowboarding (I try to go once a year) - although I don't think I qualify as gnarly or rude or whatever the kids say these days. I did a 180 once, but unfortunately not on the horizontal plane.
Oh, and I can't swim. It's probably worth bringing that up for safety reasons.