Uh, I don't celebrate it, so... I don't have any memorable ones. I do, however, remember beening in the same exact hotel somewhere on my way to and from my trips to Mexico years ago. That's probably the most memorable.
WAIT! Hahah, yes! XD I remember a great story; great to me anyways. It was years ago and I was at my aunt's house, who does celebrate it. I was sick that night, and had fallen asleep on her couch. I, half asleep, got up from the couch, and instead of going to the bathroom, I walked directly to her tree and peed on it! XD Ah, good times.
I also remember my grandma being a big ol' douche bag one year. I was in my room, and she walked in with her ceramic Jesus doll thing. She started talking to me, telling me that it was Jesus, and to freakin kiss it. (I was like 5-7 at the time) I told her no. She was reluctant to quit. I kept telling her no and that she was wrong; that it wasn't Jesus. It was just some doll. In spanish I said something along these lines: "No, that's not Jesus. That's a doll; a toy, just like my ninja turtle toys." She, bitchily, put the doll in my hands and made me carry it. I didn't do it on purpose, but the doll slipped from my arms, fell onto our hardwook floors, and broke. That, for whatever reason, is still hilarious to me.