Only one roooooool: Please just advance your 8 best efforts.
Silence of the Cows
Ben Herd
Empire of the Cow
Cow (someone had to do it)
Sex, Cows and Videotape
Something About Cows
Food of the Cows
Bull Durham
Hollywood and Bovine
Moo Over Miami
Where Eagles Dairy
For Whom the Bull Tolls
It Cud Happen to You
The Portrait of Dorian Graze
Cowsablanca
Ruminant With a View
Carlito’s Whey
Okay, that’s nine. Sorry. 
Genre: Bad horror.
C.U.D.
The Udders
Stephen King’s The Milkmaid with Cold Hands
The Little Barn of Horrors
Meat (an actual documentary by Frederick Wiseman)
The Texas Meatsaw Massacre
The Cow with Six Stomachs
Wes Craven’s Bellow
Udder Suspicion
Jersey Girl
The Dark Calf
Calf Moooooon Street
Days Bovine and Roses
American Cowpie
Kissing Jessica Holstein
The Horn Blows at Midnight
Cow on a Hot Tin Hoof
The Times of Harvey Milk
Cud (starring Patricia Veal and Paul Mooooman)
and (in all seriousness), the best cow movie of all time: Vacas
Steer Wars: A Moo Hope
Pirates of the Cowabean
Porgie and Bessie
Termoonator 3: Rise of the Moochines
We’re No Angus
Wes Craven’s Cream (eeew, maybe not)
Disney’s Holes-tein
Pixar’s The Incredibulls
Some more?
Battle Beyond the Steers
The Udder Sister
Disney’s Black Holstein
Cow, Voyager
The Churn of the Screw
And who could forget the HBO mini-series, Brand of Brothers?
You guys are better at this than me (but I would have said, "The Texas Chainsaw MOOssacre).
Carry on.
One moo over the Cuckoo’s nest
Cow to marry a millionaire
The Bull Monty
Bull Metal Jacket
Calf Moon Street
Moo over Manhattan
Milk Money
Crouching Cow, Hidden Chicken
Gary Larsen’s Moo Nightmare
My Moo Heaven
Killer Kows from Udder Space
Das Hoof
The Cowbells of St. Mary’s
The Texas Longhorn Massacre that one IS irresistable, isn’t it
Raiders of the Lost Dairy.
This is hilarious. I’m not as good at this as you guys, but I’ll give it a shot.
Milking John Moo-kovich
Lord of the Cows: The Moo Towers
Moo-lin Rouge
A-moo-deus
Angus Management
Psycow
The Cow of Monte Cristo
Moo-mento
Plan 9 From Udder Space.
The Gurns-esy-s of Navarrone.
Being John Milkovich
Phone Mooth
The Rustler
To Calve and Calve Not
Calf-Baked
Die Herd, Die Herd 2, and Die Herd : With a Vengeance
Blast from the Pasture
The Trouble With Dairy
That Thing You Moo
Holstein Powers: Cow of Midwestern Mystery
Teatanic
Good Milk Hunting
Tin Cud
White Cows Can’t Jump (over the moon)
The Mootrix (alternative title, “The Milktrix”)
Cattlefield Earth
The Milkman Always Rings Twice
Teatsie (Tootsie)
Beauty and the Beef
Dairy Poppins
The Sound of Moosic
Dairy Movie
Cream (Scream)
The Unpunchables
The Stampede and The Stampede 2 (aka The Herd o’ Bull Run and The Herd o’ Bull Run 2)
Throw Bossie from the Train
The Adventures of Baron Moonchausen
Black Cow Down
A Cow’s Life
Indiana Jones and the Last Moosade
The Last Samoorai
El Mooriachi
Remoo Williams: The Adventure Begins
The Silence of the Cows
Tipping Miss Daisy.
Bridget Jone’s Dairy
toro! Toro! Toro!