This article claims that you can override some elevators to ignore stopping on certain floors by pressing the close door button and the desired level at the same time...
Can't wait to try it.
_Elevators that have been tested and worked on:_
+ Otis Elevators (All But The Ones Made In 1992),
+ Dover (Model Numbers: EL546 And ELOD862),
+ And Most Desert Elevators(All, But Model Numbers ELD5433 And ELF3655)