Fun Twitter Game...
If you have a long layover at an airport, do a search for that airport code and see what other twitter users may be there. If they tell twitter where they are going, there is a good chance you can find the proper gate. If they have a picture posted on their twitter profile, you will likely be able to recognize them.
From this point, there are lots of variations... You could do some digging on their website, find out as much as you can about them, the pretend to recognize them, addressing them by name, asking relevant questions about how they are doing etc... That might be a bit much...
You could take a picture of them, and post it on twitpic, with @username???? This would be a startling way to introduce yourself..
Personally I like this variation the best: Do something twitter worthy--- then when they tweet about it reply via twitter.. Bring them a cup of their favorite Starbucks drink for example - Say "this is for you", then walk off, returning to you own gate... When they tweet about it, give them an @ reply "Your welcome"
