If you need a good laugh watch Just Friends. I laughed so much I had tears rolling down my face at some stages. Ryan Reynolds is home after 10 years and meets up with the girl he loved in high school even though she had relegated him to the just friends category.
Chris Klein plays a different part to his normal roles and Anna Farris does a great job of playing a Paris/Ashley/Britney type character.
A no brainer that gives you some belly laughs when you least expect them.