This was so much fun from start to end :D Not something for people without a sense of humour or imagination though... Yes it gets wackier and more odd the further it goes along, but that's exactly the point! It's not really supposed to make perfect sense, and it doesn't try to be serious all the time or fill every pothole.
Michael and David were excellent and I really enjoyed spotting the little cameos from many other popular actors. A lot of the time the acting was over the top, but it wasn't out of place. Since everyone acted the same it just added to the comedy and absurdity of it all. Even the slightly outdated CG worked! Everything just comes together and I so enjoyed watching it play out.
If you're thinking of watching it, definitely give it a go! Just mind the 16+ rating for some scenes :3