If you're on the road to meet his or her family for the first time this holiday season, there are specific lessons you can learn from a wide variety of movies.  Watch and learn!  

1) Do: Make a Second Impression. In the movie Fever Pitch Ben makes a poor first impression with Lindsey's parents by freaking out at dinner when he thinks he'll overhear the score to the Red Sox game he DVRd at home. So he treats them to a golf game the next day scoring major points and erasing the initial meeting fail.
2) Don't: Go Overboard With the P-D-A: In Father of the Bride, George was having a tough enough time learning his daughter was engaged to the man he's meeting for the first time - the PDA just made it doubly awkward. Keep the affection to a minimum around the family, especially the first time you meet them!
3) Do: 'Fess Up' to Accidents. Greg is doing his best to make a good impression on his future dad-to-be in Meet the Parents, but his bad luck leads to disaster after disaster. But things just get worse when he tries to cover up his accidents, like replacing the family's cat with a stray who ends up destroying the house. Honesty is the best policy!
4) Don't: Get Too Close to Your Brother-in-Law. Madeleine is just trying to help when she offers to tutor her husband's married brother after meeting the family for the first time in Junebug. But he thinks she's flirting and goes in for a kiss. Try not to send mixed messages, they can lead to disaster
5) Do: Be a Good Sport. When Andie meets Ben's family for the first time in How to Lose a Guy in 10 Days she jumps right into their game of BS (not the degree). It loosens everyone up right off the bat and she feels like a part of family by the end of the game.
6) Don't: Be Too Uptight. Jack is a neurotic New Yorker meeting his French girlfriend Marion's eccentric family in 2 Days in Paris. But between the language barrier and Marion's parents' laissez-faire attitude, Jack is too uptight and uncomfortable to relax and enjoy the trip. When you're facing a culturally different family, sometimes you just have to go with the flow for the sake of your significant other.
7) Do: Be Yourself. In The Birdcage, Val invites his fiancée Barbara's conservative senator father and his uptight wife for dinner at his parents' home in Miami. The only problem is that Val's parents are two gay men who own a South Beach drag club. To avoid any controversy, one of Val's dads decides to dress in drag and pretend to be Val's mother. The dinner is a disaster, albeit a hilarious one, and once the wig comes off, the jig is up. But after Val and Barbara explain their motives, the conservative parents understand and forgive Val and his two dads, proving you should just be yourself.
8) Don't: Forget to Set Ground Rules. In Failure to Launch, 35-year-old Tripp lives with his parents who are home when he and Paula arrive there for a date. Even though Tripp is using the "accidental" meeting to freak Paula out so she'll break up with him, if you really lived with your parents you'd want to make sure they knew not to interrupt your date (and spill the beans that you live with them)!
9) Do: Be Understanding. When Jamie meets Dylan's dad who's suffering with Alzheimer's disease in Friends With Benefits, she's super accepting of Dylan and his family, just the way they are. Now that's a keeper!
10) Don't: Forget Who You're Dating. In The Family Stone, Meredith meets boyfriend Everett's family for the first time and things don't go according to plan. By the end of the flick there are some unexpected couplings, which works out in the movie, but probably wouldn't in real life.