Gay/transsexual movies:

• A Four Letter Word
• A Home at the End of the World ♥♥
• A Single Man
• All About My Mother (Todo sobre mi madre)
• Almost Normal
• Amphetamine ♥♥
• Angels in America (mini series) ♥♥
• Bad Education (La mala educación)
• Bear City
• Beautiful Thing
• Between Love & Goodbye
• Big Eden
• Billy's Hollywood Screen Kiss
• Bishonen (Mei shao nian zhi lian)
• Boy Culture
• Boys Don't Cry ♥♥
• Breakfast on Pluto
• Brokeback Mountain ♥♥♥
• Cowboys & Angels
• Dream Boy
• Eating Out
• Eating Out 2: Sloppy Seconds
• Eating Out 3: All You Can Eat
• Edge of Seventeen ♥
• End of Love (Oi do chun)
• Eternal Summer (Sheng xia guang nian)
• Fögi is a Bastard (F. est un salaud)
• Get Real
• Holding Trevor ♥
• I Love You Phillip Morris
• Just a Question of Love (Juste une question d'amour) ♥♥
• Latter Days
• Little Ashes
• Longtime Companion
• Make the Yuletide Gay ♥♥
• Maurice
• Milk
• Mr. Right
• Mulligans
• My Life in Pink (La Mie En Rose) ♥
• My own Private Idaho
• Mysterious Skin ♥♥
• Nico and Dani (Krámpack) ♥
• No Regret (Huhwihaji anha)
• Party Monster
• Patrik, Age 1,5 (Patrik 1,5)
• Prayers for Bobby
• Protect Me From What I Want (short film)
• Redwoods
• RENT ♥♥♥
• Rent: Filmed Live on Broadway ♥♥
• Rock Haven ♥
• Shank
• Shelter ♥♥♥
• Shortbus ♥
• Simon
• Slutty Summer
• Summer Storm (Sommersturm) ♥
• The Adventures of Priscilla, Queen of the Desert
• The Art of Being Straight
• The Big Gay Musical
• The Blossoming of Maximo Oliveros (Ang pagdadalaga ni Maximo Oliveros) ♥♥
• The Fluffer
• The Man I Love (L'homme que j'aime) ♥
• The Man Who Loved Yngve (Mannen som elsket Yngve) ♥
• The Rocky Horror Picture Show
• The Rules of Attraction
• The Sum of Us
• Threesome ♥
• Torch Song Trilogy
• Transamerica
• Trick
• Velvet Goldmine
• Watercolors ♥♥♥
• Were the World Mine
• Wild Tigers I Have Known
• Yossi & Jagger ♥
• You are not Alone (Du er ikke alene)
• XXY

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Lesbian movies:

• Monster
• Show Me Love (Fucking Åmål) ♥♥♥
• The Kids are All Right
• Water Lilies (Naissance des pieuvres)

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Movies listed on Wikipedia for LGBT action, even though I don't understand why:

• American Beauty
• Billy Elliot
• Bridget Jones: The Edge of Reason
• Clueless
• Copycat
• Cruel Intentions
• Cursed
• Ed Wood
• Fame
• Fried Green Tomatoes
• Hair
• Interview with the Vampire: The Vampire Chronicles
• Little Miss Sunshine
• Mean Girls
• Miss Congeniality 2: Armed and Fabulous
• Mrs. Doubtfire
• Mulholland Drive
• Poison Ivy
• Running with Scissors
• Scott Pilgrim vs. the World
• The Disappearance of Alice Creed
• The Silence of the Lambs
• Thirteen
• V for Vendetta
• Valentine's Day
• Vicky Cristina Barcelona
• Wedding Crashers
• Wild Things
• Wonder Boys