YES!
On our trip last December, we ran into some friends of ours that had recently moved to San Diego, that was kind of cool!
On that same trip, I ran into one of my employee's sons in the Food Court of All Star Movies. What's creepy and awful about this is that I have NEVER met this guy and he had no idea who I was, but I talk to his Mom and his Sister every single day, and have seen so many pictures of his family, that for some reason, I really felt compelled to talk to him like I've known him for years. Too bad I never introduced myself, I just started talking to him like I knew him, thus making me look absolutely insane. Whoooooooops?
But even crazier....
This past September, my Husband and I are walking to our room in the Pop Century, and we're on that weird trail between the 60's building, heading towards the bowling pin pool in the 50's building, when I hear this voice from behind me asking "Excuse me, could you tell me where Building 5 is?". We didn't really know where it was, so we helped the guy and started to walk away, when he decided to keep talking to us...to our backs. We were really really tired and didn't want to talk, but he kept talking to our backs, so we felt bad and stopped and talked to him for a bit. Everything he did seemed really odd and really familiar. In my head, I kept saying "Where do I know this guy?" and then he started talking about himself "I'm 65 years old, and today's my birthday! Can you believe I've never been here? 65 years, and my first trip to Disney World, how crazy..." then he dropped the bomb on me "I'm from Philadelphia..." then my brain started RACING. I couldn't even concentrate on what he was saying, all I could think was "WHERE DO I KNOW THIS MAN FROM AND WHY WON'T HE SHUT UP". My husband was talking to him about how we were also from Philadelphia, but he wasn't interested in us...he just kept talking about himself

Eventually, he decided to go to bed, and I didn't mention the familiarity to my husband, because I figured if he didn't recognize him, he wouldn't be able to help me remember him.
Then a couple days later, we're sitting in the Food Court when that guy walks in --- wearing a big sombrero! I almost DIED. I can't believe it took a giant sombrero to help me remember him. I used to work at a Starbucks in the business district of Philadelphia, and this guy used to come in every single day. He'd wear a Hawaiian shirt and a big floppy hat and order a large glass of milk. He was kind of slow, and would always start these really crazy conversations with me about absolutely nothing. He ruled. I stopped working there about 6 or 7 years ago. He always thought my name was Cynthia (I'd say 'Danielle', he'd repeat back 'Cynthia'...after numerous tries, I just gave up and became Cynthia)
I decided against telling him who I was. I felt like a fraud enough as it was, since he thought my name was Cynthia all this time! I'd also have felt really dumb if he didn't remember me...I have this tendency to remember people and faces that I probably shouldn't (as evident from my 2nd story)