Leo Tolstoy once wrote that happy families are all alike, but every unhappy family is unhappy in its own way. With that in mind, we've put together a gallery of some the most dysfunctional clans in cinema. Be thankful this holiday season that you aren't going home to these folks.

Photo by Paramount/Kobal Collection, WireImageTHE CORLEONES -- THE GODFATHER

Some families deal with brotherly spats through a round of beer or perhaps group therapy. The Corleones, on the other hand, use more direct methods. Though their weddings are amazing, their fishing trips should be avoided.

Photo by Buena Vista Pictures, Everett CollectionTHE TENENBAUMS -- THE ROYAL TENENBAUMS

The Tenenbaums have been called the family of geniuses. But it doesn't matter whether you win a Pulitzer Prize in the junior high, are a top seeded tennis player or are a business whiz, there is no talent so great that patriarch Royal Tenenbaum can't belittle, denigrate, or ridicule.

Photo by Fox Searchlight, Everett CollectionTHE HOOVERS -- LITTLE MISS SUNSHINE

Some family vacations are the stuff of cherished childhood memories. And then there's vacation with the Hoovers: a failed life coach dad, moping son, dispirited mom, chubby beauty pageant contestant daughter, suicidal uncle and a dead grandpa all crammed a in VW bus with no clutch.

Photo by DreamWorks/The Kobal Collection, WireImageTHE BURNHAMS -- AMERICAN BEAUTY

The Burnhams look like the perfect suburban family with the perfect suburban house, but trouble lurks below the facade. Dad has quit his high-paying white collar job to flip burgers and chase cheerleaders; mom continues to canoodle with a mono-browed realtor; and little Jane is messing around with the creepy neighbor's kid. All that is definitely dysfunctional but the real danger lies with the gun-wielding homicidal homophobe next door.

Photo by The Kobal Collection, WireImageTHE McCALLISTERS -- HOME ALONE

The McCallisters make it a habit of leaving their children alone in the house to fend off criminals while they jetset around the world. Child services has been notified.

Photo by 20th Century Fox, Everett CollectionTHE MANTLES -- DEAD RINGERS

Sibling closeness is an admirable quality, but only in moderation. When you and your twin share the same clothes, identities, and mania for mutant women, you might want to consider a little quality "me" time.

Photo by Warner Brothers Pictures, Everett CollectionTHE TORRANCES -- THE SHINING

All work and no play might make Jack a dull boy, but considering Jack's idea of family fun involves a bottle of whiskey, an axe, and an elevator filled with blood, he should probably stick to work.

Everett CollectionTHE ISELINS -- THE MANCHURIAN CANDIDATE

Some kids accuse their parents of brainwashing them to conform to their aspirations. The Iselins, however, have literally brainwashed their son -- thanks to the North Korean military -- to kill the president and then kill himself. In comparison, law school looks like a cinch.

Photo by Paramount Pictures, Everett CollectionTHE CRAWFORDS -- MOMMIE DEAREST

While the Crawfords have oodles of old school Hollywood glamour and an immaculately clean house, they have also violently strong opinions about coat hangers. Be warned.

Everett CollectionTHE BATES -- PSYCHO

A boy's best friend might be his mother, but Norman Bates' mom has a nasty habit of murdering any girl who talks to him, which sort of cramps his style.

Everett CollectionTHE SAWYERS -- TEXAS CHAINSAW MASSACRE

The Sawyers are known for their family togetherness, love of power tools, and their unusual home cooking. That said, it would probably be a good idea to give their Thanksgiving feast a miss.

Photo by Dreamland Production/The Kobal Collection, WireImageTHE JOHNSONS -- PINK FLAMINGOS

The Johnsons are known throughout the greater Baltimore area for being the filthiest family around, gleefully partaking in pretty much every sordid activity you care to imagine and many you wouldn't. Holiday parties with the Johnsons usually wind up being traumatic, if not life-threatening.