Interesting, fun museum. I'm a bit of a sneakerhead, so this was the type of quirky museum that appealed to me (though it is decidedly NOT a sneaker museum). Only knock on it (hence the 4 stars vs 5) is that it's not that big! I was expecting to spend at least an hour or two going through everything, but we were done in about 45 min.
It is a great deal, though, if you're going with a family. The family package was incredibly affordable, especially compared to the other attractions Toronto has to offer.