We always meet someone we know while on vacation. My mom say's its not a vacation unless we do so! (Then again, we used to travel during Jersey week, when all of Jersey is down there, so it's bound to happen).
I guess the weirdest "run in" was in January. My friend and I had gone down for a week, and we were walking through the MK on our first night. We had gotten caught in a bottleneck area near BTMRR, and were walking real slow. My friend is about 6 ft tall, and can be loud at times, and we were talking and such when the group in front of us suddenly stopped. I almost tripped over them and tried to go through, when someone said my name. It turned out to be a friend of mine, with her husband and mother. I live in NJ, and she lives in Idaho. I had been in her wedding a few years earlier, but hadn't seen her since they moved (the day after the wedding). They were there visiting her parents, and finishing their honeymoon. (There had been a hurricane that closed the parks on their acutal honeymoon). We spent the rest of the night with them, and then suprisingly, met them the next day in Epcot too. It was a lot of fun to see them, esp. in WDW!