I saw this last week, and it lived exactly up to my expectations. Not great, not terrible. Serkis and Pegg are funny in certain moments, both of them at times have expressions that genuinely make you laugh out loud!! Once you suspend your disbelief, Ronnie Corbett as the chief of the militia is pretty funny!! People have said it is too dark to be a comedy, and too light to be a drama. For me, this is a classic "leave your brain at the door" film. Most of people in cinema were laughing a few times, and I didn't find it too dark. Even the bits with dead bodies were more funny than frightening. If your wanting to have a laugh, and are not over squeamish, I recommend it. Doesn't pretend to be anything it isn't.
Review of Burke and Hare
