How High: The two main characters in this movie tuck explosives on pigeons and blow them up!
Dustin Abraham is the ingenious scipt-writer of this film.
(We should really start crediting these guys!)

The Others: One of the dialogues that takes place between the 2 kids goes something like this:
[talking about the Bible] "_It says the Holy Ghost is a dove!".
"Doves are not holy!"
"Yes, they pooh in our windows!"

Satan's School for Girls (TV): Karen Oxford enters an abandoned building inside the campus and gets scared by some pigeons.

The Fight Club: One of the vandalism acts that is performed by the members of the Fight Club during the movie is to feed flocks of pigeons on rooftops and then let them do... what they do best!

Major League II: The rival team's batter hits a pigeon. The pigeon falls down on the ground and Pedro Cerrano runs to rescue it instead of catching the ball. The Indians loose the game. The sport-casters comment at the end of the game:
_"At least the bird survived."
_"Who cares! It's a rat with wings!"

The Tower: An automated system for the protection of the tower detects a pigeon sitting in the air-duct. The system exterminates the pigeon and the computer monitor informs: "SECURITY BREACH DELETED"!

Sea Of Love: Al Pacino runs after someone who has entered his apartment building. He looks out of the corridor window to see where the stranger/intruder went. 3 pigeons, sitting right out of the window fly away with a noise, scaring him.