I've seen infomercials on the Trikke and would love to try one out... I enjoy rollerblading, I think it'd be a fun way to cross train from biking, especially if it gives your upperbody a work out....

Though, what kind of terrain can they handle? We have a lot of chip sealed streets around here. I would imagine that one would have to wait until they got packed a bit better. Even then, it's hard to rollerblade on those streets.