Are YOU looking at ME?!!

I know we've all gone through this....you turn the corner and start walking down the long hallway when you look up and see that there is someone else on the opposite end of that long hallway...coming towards you.  Now the hallway feels even...longer.  What do you do?  Do you stare at the ground in front of you?  Do you check out the interesting art on the walls ("I just love what the Kindergarten class has done with snowflakes!").  Do you acknowledge the person coming towards you and then look down?  They know you've seen then.  You don't want to look pretentious.  You want to be friendly.  However, you also don't want to be stocker friendly with continued eye contact for the 10 uncomfortable remaining seconds until you have passed one another.  WHAT DO YOU DO?!!  Everytime I have this walk, I repeat this conversation in my head.  However, I have found ways to entertain myself during these torturous times.  I watch to see what the other person does.  It's humorous seeing someone look even more uncomfortable than I feel.  Then I mentally shake my head and laugh to myself and think....I gotta blog this!