I'm surprised by all the negative comments - this was the first National Lampoon movie I saw, so I came to it fresh. OK, so it's not a great work of art, but I thought it was side-splittingly funny in places, and cleverly parodies all the national stereotypes that people tend to use.
As a great fan of visual humour, my favourite moment in the film has to be the scene where, having had all their clothes stolen, the family go shopping in a boutique in Italy and emerge on to the street dressed in absurdly over-the-top designer creations. It really is one of the funniest sights I have ever seen in a film. I defy anyone with a sense of humour not to laugh.
