Long Time Companion, Torch Song Trilogy, Philadephia, It's My Party, etc.... they all get me everytime because I think of friends I've lost.
"Rent" the movie - I'd never seen the broadway production, and it got me for the same reasons as the above. They play songs from it every monday night at Showtunes night at the local video bar and everybody sings along. It's just like a big anthem of love.
"Silverlake Life" - a documentary shot by a film professor as he is dying of AIDS. It's just so beautifully made, gripping, and horribly real. Not for the squemish. When his lover finds him dead in the morning and films his last few moments as he is saying goodbye to his partner before he calls the ambulance. Absolutley heart wrenching.. Then when the ashes arrive back from the creamtorium.
Brokeback Mountain - the final scene. (Not to long ago they actually auctioned off the shirt from that scene as part of a benefit. It got a huge amount of money if I remember correctly.)
To Wong Foo - "I know that I have a lady friend who has an adams apple." I don't know why. I think it was that he had found acceptance finally.
The Hours - I actually said out loud "NO!" and started bawling when they connected the two stories and I realized that Ed Harris was Julianne Moore's son all grown up...just cut me to the heart. I hadn't figured it out until that point for some reason, it was just cruel fate I guess.
Saving Private Ryan - I think I started crying about a quarter through the opening scene on Omaha beach...it was just so raw and real and death was everywhere. I remember sinking in my seat, actually hiding from it all. I went to see it one my own and I kept thinking about my grandfather and that this was a war that he fought in. It was the first time that the rality of war like that had set in on me. It overwhelmed my senses.
The Queen - It's really more a combination of the music and the imagery. There's a point, I think during Diana's funeral, where they play "Libera Me" from Verdi's Requiem. I teared up.
Titanic - I fought so hard not to cry when Jack slipped below the waves, and turned to find my straight male friends were crying. I lost it when they alluded to Rose's death at sea and that she had re-joined Jack over Titanic.
It's not a movie, but almost every episode of Extreme Make-Over Home Edition gets me.