MISS CONGENIALITY (Movie, 2000)

Sandra Bullock has a warmth that gets you smiling even when the material is weak. She begins the film looking unglamorous and then undergoes a transformation. She starts as an FBI agent and ends up as a beauty contest finalist. 

Bullock is funny and charming, she can't overcome a bad script that makes the movie feel too much like a fluffy, unoriginal sitcom.