I have to admit that I didn't expect to like this movie but actually it was a pleasant surprise. I think the fact that some of the dialogue clunked terribly added to the humour. The premise is ridiculous, yes, but it is so for a reason. The people making this film don't expect you to take it seriously, it's not a history lesson. The film delights in sending up stock Hollywood clichés, the token black guy, the Americans saving the world etc, and I would suggest it as a tonic to anyone who had just endured "Hollywood history" dross like Pearl Harbour or U-571. The script contains some cracking one-liners and there is a pretty great British cast. Having Hitler to stay at the palace is an inspired piece of comic invention and the story with the princess parodies Mel Gibson's Braveheart sub-plot quite hilariously The absurdity of the movie is what saves it, if they had gone and made a half hearted effort it would never have gotten to film. Give it a go.