I didn't like this at all. Having actors play fictionalised versions of themselves can be fine, for example The Trip, but to make it work you need to still spend a bit of time on character - making them sympathetic etc etc. I thought This Is The End entirely sidestepped this by just throwing famous people at the screen and assuming the audience would care about them because... well, because they're famous people! And who doesn't love famous people? They're simply better and more important than everybody else. Some of the jokes were funny, but on the whole they were largely completely incidental to the film. I came away thinking this was only a couple of steps up from Scary Movie 3, or something like that.
It irks me slightly that this did better business overall than The World's End, which is a far better film. Didn't Seth Rogan work with Simon Pegg whilst TWE was in the works?....
just sayin'.
The special effects were cool, though. I'll give them that.