I love craft stores mostly because I am addicted to scrapbooking and paper. I'm always looking for cheap things I can buy that also fuels my addiction, so I often wander into Craft Warehouse to see what sort of goodies they are offering.
I love their sidewalk sales. I've found nice things for as little as a quarter (scrapbook materials that retailed for $4).
I've heard good things about their classes although I have never gone to one myself.