Similar to "Songs with one letter added, removed or changed (http://discoverseattle.net/forums/index.php/topic,7823.0.html)", I think a "Movies with one letter added, removed or changed (http://discoverseattle.net/forums/index.php?topic=8342)" post is worthwhile.
The Dark Knight Rinses
"You either die a hero or live long enough to become a reluctant dishwasher."
The 400-Year Old Virgin
So it's basically just Twilight.
Nightmare On Elmo Street
Stop touching me Elmo!
The Humane Centipede
"A heartwarming kid's film."
A Town Like Malice
Beast of Eden
Terrifying horror movie featuring a snake.
Boy Story
Underage love among a child's toys
Last & Furious
The story of an angry race driver who never wins
How To Drain Your Dragon
X-Rated story about, well, you know what it's about
Aging Bull
Story of elderly animal
Seven Rides For Seven Brothers.
Apocalypse How
A confused soldier who can't even
Bad Day at Black Cock
A western porn star can't get the job done
Beauty and the Feast
A pretty girl has an epic eating disorder
Beverly Hills Wop
An Italian immigrant finds he's not welcome in the fancy part of town