Bad Santa for numerous reasons, not the least of which is Lauren Graham's smile.
For fans of the movie ... there's a second one in development with Billy Bob retaining his role.
http://www.slashfilm.com/bad-santa-2/
Please hollywood, don't try to bolster ticket sales by softening up the Willie character. I know it's tempting but I implore you, show a little dignity.
Also the first Die Hard movie.
Edit: Almost forgot