I went and saw The Hitchhiker's Guide to the Galaxy last week. I was prepared for the worst. Some early reviews had been less than glowing.
I liked it. I think they did about what could be done in 2 hours with the material. I wasn't particularly fond of Mos Def's portrayal of Ford Prefect, but I was pleased with all the other performances. The Magrathean factory "floor" was splendid.