This tip is for those impatient people who don't want to stop at every floor while riding an elevator. Rumor has it that it's a system built into elevators so policemen, firefighters, etc. can get to the floor they need without waiting. This trick works supposedly works in all elevators -- the one time I tried it, it worked! Here's what you do:
1) Enter elevator and hold the "close doors" button.
2) Still holding the "close doors" button, select the floor you wish to go to.
3) Do not let go of the "close doors" button until the elevator moves. You'll be taken directly to your floor without stopping at any others.