Troma Movies has released 150 films from it's nearly 40 year history on YouTube. Troma is known for their low-budget independent movies that play on 1950s horror with tongue firmly implanted in cheek - and even better, many of their films contain social commentary.
A little history from Wikipedia:
Troma films are B-movies known for their surrealistic or automatistic nature, along with their use of shocking imagery; some would categorize them as "shock exploitation films". They typically contain overt sexuality, nudity, and intentionally sadistic, gory, and blatant graphic violence, so much that the term "Troma film" has become synonymous with these characteristics. Troma's slogan is Movies of the Future. Troma reuses the same props, actors, and scenes repeatedly, sometimes to save money. At a certain point, however, this became another hallmark of Troma. Examples include a severed leg, a penis monster, and the flipping and exploding car filmed for the movie Sgt. Kabukiman, NYPD, which is used in place of any other car that needs to crash and explode.These are some classic titles from their catalog:
Troma produced or acquired early films featuring several rising talents, such as Carmen Electra (The Chosen One), Billy Bob Thornton (Chopper Chicks in Zombietown), Vanna White (Graduation Day), Kevin Costner (Sizzle Beach, U.S.A.), Samuel L. Jackson (Def by Temptation), Marisa Tomei (The Toxic Avenger), Vincent D'Onofrio (The First Turn-On!), David Boreanaz (Macabre Pair of Shorts), Paul Sorvino (Cry Uncle!), James Gunn (Tromeo and Juliet), Trey Parker and Matt Stone (Cannibal! The Musical), before they were discovered. Another Academy Award winning director, Oliver Stone, made his debut as an actor in The Battle of Love's Return.
Their latest production, Poultrygeist: Night of the Chicken Dead, was released in late 2006.