RV - * * *
I was actually surprised that this movie stayed with me for so long. Days after seeing the film, I kept thinking about Williams, a father who has lost touch with his children, trying not to let on that he is actually disguising a work trip as a family vacation.
RV's plot reminded me of the now classic "National Lamoon's Summer Vacation." But where Chevy Chase never gets beyond the physical humor and ironic dialogue, Robin Williams seems to be able to be funny and create genuine pathos. I really cared about him. With Chevy Chase, you never really feel much for his character; you're just glad it's him and not you going through all those problems.
This is also a good one to bring your kids to, although there is a fair amount of gross-out humor.