The Hitchhiker's Guide to the Galaxy (2005)
Went to see the movie opening day, loved it. Yes there was the romance between Arthur and Trillian, or Patricia McMillan but that is forgiveable.
I loved it, yes totally enjoyed it. The book parts were funny; Arthur was funny, Ford was great, Zaphod was off the wall, like he should be and the stuff that only a true fan would get, super.
What sort of thing, the bejewelled crustasian of Vogsphere, the home of the Vogons.
I laughed and like a lot of fans, clapped at the end.
by the way, I did annoy my daughter by speaking along with some of the great quotes from the book. You could also tell the fans, they were the ones really laughing at things.
There was a cameo from the original Marvin and the original Arthur Dent, and for the latter, had to google to see where he was.
for more on the Vogons, see this link.
Also, if you want to read the book, go to this site.