I've been to several here in the bay area, and for the most part none have really surprised me in a good way. Memphis Minnies makes great sweet potato pie and that's about it. Most of their BBQ is very, very inconsistent( I've gone back several times to know this) most of the time, it's dried out, overcooked, or unexciting in general. If I was there to have a few slices of brisket as he pulled them off the smoker, that might be different, but haven't had the chance yet.
And the hygeine of the place isn't the best. I wrote a review on Yelp about it. You can see the whole kitchen area, as the entire restaurant is quite narrow, and all the equipment and pans look like they aren't cleaned well enough. Things like the cornbread muffin pans were not only blacked from use ( probably well seasoned, a good thing) but also had several layers of baked on grease and corn meal clinging to them.
I plan on giving Gorilla BBQ a try this Thursday, and will be glad to offer a fair assessment of them. I know they were just on Food Network this month with Guy.