Actually, this is the one place I opt for the chain, House of Blues is my 'must visit' in DTD. We don't have any of these in my area, so I always visit them when I'm in wdw and Vegas. I love the atmosphere and the food.
I enjoy Planet Hollywood for the atmosphere (I'm a big movie buff). The food has improved, its not great, but its not bad for a luch stop.
If your out for an afternoon of shopping, nothing beats Ghiaridelli's for a cool respite from the heat. The only thing that bugs me is that there are seperate entries for the ice cream shop and the chocolate shop. But I love this place.