Sounds like you were holding in so much that that made you explode, mate. You gotta learn to cry.
On topic, I'd say Sonic Adventure One with Omega dying at the end made me bawl like a baby. And so did the ending of Pikmin. There have been a few other instances, but only so many. Those are the ones that come to mind immediately.
Edit: I remember tearing up a bit at the end of Portal 2. It felt like the end of something huge, and so... it kind of got to me. I also liked how emotional the song was.
On topic, I'd say Sonic Adventure One with Omega dying at the end made me bawl like a baby. And so did the ending of Pikmin. There have been a few other instances, but only so many. Those are the ones that come to mind immediately.
Edit: I remember tearing up a bit at the end of Portal 2. It felt like the end of something huge, and so... it kind of got to me. I also liked how emotional the song was.