A "Grindhouse" was a type of inner city theatre that would play all night marathons of low budget exploitation films in the 60s, 70s and early 80s. These down n dirty theatres would often show offbeat ultraviolent and sexually charged films under the categories of Kung Fu (Shaw Brothers films), Hixploitation (White Lightning, Gator Bait), Blaxploitation (Shaft, Coffy, Superfly, Dolemite, The Mack), Sexploitation (Supervixens, The Swinging Cheerleaders), Zombie and Cannibal films (Dawn of the Dead, Zombi 2, Cannibal Holocaust) Biker films (The Wild Angels, The Glory Stompers, The Savage Seven, The Losers) among hundreds of other subgenres.
In the suburbs during the 60s and 70s, Drive-ins were the equivalent to the inner city Grindhouses. You could see many of the same kinds of films from the convenience of your car. The title of Robert Rodriguez and Quentin Tarantino's first collaboration "From Dusk Til Dawn" (1996) was named after the catch phrase for the all night Drive-in movie marathons.
Both Robert Rodriguez and Quentin Tarantino grew up watching these kinds of films in Grindhouse theatres & drive-ins in the 70s-early 80s. When they became friends in the early 90s they often held Exploitation film double features in their own home theaters (and also at QTs Film Fests in Austin, Texas). Flash forward to 2006, the two moviemaking pals decided to recreate these wild nights for movie audiences around the world by making their own traditional Grindhouse-Drive-In double feature extravaganza complete with two raunchy horror films, fake Exploitation film trailers, ads and other cool treats.