For such a puerile thread that's actually quite clever

Broke back Bumhole

The Silence of the Bumholes

The Hunt For Red Bumholes
How to Train Your Bumhole
I Am Bumhole
Men in Bumholes
Aliens vs Bumholes

Blazing Bumholes
The Wrath of Bumhole

I already did that one.

Oops Filthy minds think alike

Deep Bumhole

Withnail and Bumhole

Star Wars Episode IV - A New Bumhole
Raiders of the lost Bumhole
Lord of the Rings - The Two Bumholes
Requiem for a Bumhole
Eternal Sunshine of the Spotless Bumhole.

Babe 2 : Pig In The Bumhole
The Evil Bumhole
The Invention of Bumholes

Robin Hood: Prince of Bumholes

All The Presidents Bumholes

The Dark Bumhole
The Fellowship of the Bumhole
Once Upon a Time in the Bumhole
Apocalypse Bumhole
Back to the Bumhole
A Clockwork Bumhole
Full Metal Bumhole
Raging Bumholes
Inglourious Bumholes
Lock, Stock and Two Smoking Bumholes
The Grapes of Bumholes

and I think we deserve an honourable mention to the film that can get away with not having the name changed;

Moon.

Field of Bumholes

Eternal Sunshine of the Spotless Bumhole

The Girl With The Bumhole Tattoo.
Scent of a Bumhole.
Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bumhole.

Flight of the Bumhole

A Funny Thing Happened On The Way To The Bumhole

Those Magnificent Men And Their Flying Bumholes

James Bond : The Spy Who Loved Bumholes

Austin Powers : The Spy Who Shagged Bumholes

Sleepless In Bumholes

The Secret in their Bumholes
In the Heat of the Bumhole

Bedknobs and Bumholes

Howard's Bumhole

The Spy Who Loved Bumhole

Close Encounters of the Third Bumhole

The pink bumhole

Youth in bumhole

what's going on here!