My little sister, Laura, is also getting pretty excited about cycling and is on board for a trip called BTC (Bike Through Colorado) that she'll be doing this summer. Laura is such a natural on a bike. She came to visit over her spring break from college and we took a little ride together. I've been training for months and figured I'd be the more advanced cyclist, but she was faster than me and not at all afraid at staying clipped in at stops- something I'm still working on (I don't trust my sense of balance I guess).
I think all of my siblings have actually acquired a bike within the past year or so. We'll have to see where we all end up biking to.