Movies that i've either welled up or had tears run down my face:
Where the Red Fern Grows (nowadays anything with a dog dying makes me sad, lost my first dog over the summer, was only 3. RIP Shadow. Heh, eyes are wellin up just typin it out. I can't watch the animal channel when they have anything with dogs on.)
Powder
Harry and the Hendersons (Lol, I still remember crying during the movie, I was like 8-10 at the time. Harry getting lost made me sad. I was empathetic early on and have continued so my entire life).
Braveheart
Armageddon, Bruce and Liv played the roles awesome, gets me everytime.