I've thought about that before too!-- when we moved to Princeton we got tons of free offers in the mail. It seems like it might be a pain to deal with all the paper work at the beginning of each free trial, and the pressure of the gym employees when you leave. But it definitely beats the $50-60/month some gyms charge!
My boyfriend gets to use the University gym for free as he's a grad student. As the girlfriend, I qualify for the "spouse rate" of $35/year. (Or I didn't do this til January so I had to pay $25/half year)
PS, speaking of Dare products -- one of the families I babysit is from Montreal - and they always have these tasty chocolate covered marshmallow "cookies" that are by Dare
