Straight-trippin’ Melissa McCarthy menaces the country in “Tammy.” (Warner Bros.)

In “Tammy,” in theaters now, a woman (Melissa McCarthy) tries to find herself (and, hopefully, clean bathrooms) on a cross-country road trip. Taking to the highway is a cinematic tradition that often leads to self-discovery (and, hopefully, clean bathrooms).

‘The Road’

In this 2009 adaptation of Cormac McCarthy’s novel, a man and his son travel on foot in a post-apocalyptic world. The boy whines constantly that it’s boring and when are they gonna be there and there’s a McDonald’s RIGHT THERE CAN WE STOP?!

‘Easy Rider’

Two guys on motorcycles head out to find the spirit of America in this 1969 classic. They find a lot of violence and drugs. So … success!

‘National Lampoon’s Vacation’

We’re not running this blurb this week. Moose out front shoulda told you.

‘It Happened One Night’

There’s a scandalous part in this road-trip rom-com where Claudette Colbert shows off almost her entire leg. Above the knee, people. Proof that our moral decay started in 1934.

‘Thelma & Louise’

We all know how this 1991 film ends, but remember it’s the journey that’s important, not the destination. Unless the destination is the Grand Canyon and you’re going to awesomely drive off of it. Then the destination is also important.

More from Film:

Steve James let Roger Ebert guide him for his intimate doc ‘Life Itself’

AFI Silver is screening a double feature of ‘The Shining’ and ‘Room 237′ on Saturday

‘Korengal’ tells the everyday stories of combat, and paints a fresh picture of war