Add/remove/replace ONE letter in a movie title to eff it up!

[retrorussell]

THE FISH THAT HATE PITTSBURGH
Somethin' about Pittsburgh that fish just don't seem to like!
SUPER BUZZ
A cop gets super powers after drinking beer laced with nuclear radiation.
SQUIRT
Killer worms spray people with water pistols.
ROLLER BOOBIE
Topless women rollerskating!  Yes please!
JOYSTINKS
Ugh.. what did Joy eat?  Turd tacos?  Phew!!!

[Trevor]

Brozen: two brothers get cold. 

[Trevor]

Captain America: The Thirst Avenger 

Cap gets a raging thirst after drinking Trevor's terrible coffee 

[retrorussell]

IRON BEAGLE
A dog becomes a cocky young fighter pilot, trained by Louis Gossett Jr.  Who's a good boy?
SCRAM
We don't want yer kind around here, Ghostface!  Git!  Skedaddle!
GHOST STORE
We got all kinds of spooky sheets on sale!  Float on in!
DONG OF THE SOUTH
Man, that Uncle Remus sure is gifted!
JASON XX
Jason has 2 X chromosomes-- he's actually female!

[cqmorrell]

BLUE MONKEY - "BLUE DONKEY"
A cerulean ungulate causes havoc at a Canadian veterinary office

AN AMERICAN TAIL - "AN AMERICAN FAIL"
Cellphone camera footage of ordinary mice failing at various things

MONSTER A GO GO - "MOBSTER A GO GO"
There was no monster, capiche?

DOGS - "POGS"
Animate cardboard discs begin attacking people

THE FLY - "THE FRY"
David Hedison invents a new instant french fry cooker, and of course things go awry

JURASSIC PARK - "JURASSIC BARK"
An hour and a half of small dogs in adorable dinosaur costumes chasing around children and RC cars