Mysterious
Okay, this has happened twice now, and it's kind of odd.

As you may know, our office is across the way from a consulting firm. Our office is like the Ford Escort to their Lexus. They're all redone and brightly lit with modern furniture and shiny signs and our office is small and very, very blue. Since we're the offshoot of the main office, we don't even have a real sign--my cube neighbor printed out a piece of paper with the organization name on it to tape outside our door. Nice, right?
ANYWAY...the consulting firm is populated with many khaki wearing young professionals in polo shirts. There is one fellow who is particularly smiley and friendly. Twice now, when I've walked to the elevators which face their glass front doors, he's been walking by and breaks into a smile and waves vigorously. Startled, I would wave back. 'Okay,' I think each time, 'now since we recognize eachother, we're going to be SAY HI types.' I'm on this level with all the building guys and some workout room people as well.

But then, both times, the next morning I would step into the elevator to get to work and discover that this smiley guy was there and we would ignore eachother. Today this happened again and we were the only people in the elevator and we ride all the way up to the 11th floor! I know, I could just as well say something, but I freeze up and follow suit in those kinds of situations! Very puzzling.