I also have a long stairway with an extra-high ceiling with energized glowstone flowing all the way up from the bottom. This also gives nifty lighting (though visibility is terrible if you don't have the extra high ceiling since you can't see down through the flow well) and you get the speed boost all the way so you can race up and down the stairs real fast like speed of sound.
Ooooh... that give me an idea.... Groves in the ceiling. The liquid glowstone show flow up a channel as easy as water flows down. making stairs look pimp.