I was reading about the Minotaur V that Orbital Sciences is readying for launch from Wallops Island, VA before 2014. (I really do not trust launch dates).
It is a Minotaur IV+ with a fifth stage. Ok, it is an all solids launcher, based off the Peacekeeper ICBM motors, so I get the extra staging.
Shuttle is hard to quantify in terms of stages, sort of 1.5 stages (SRB's, ET, and shuttle, but engines are on the shuttle, ET is just a tank.)
Early Atlas that dropped two engines and tankage, but kept a sustainer engine firing is another half stage approach.
Falcon 9 is easy with 2 stages (maybe 3 with Dragon).
Saturn V was mostly four stages (counting the SM/CM combo sort of as a stage).
Has there ever been a real launcher (that launched, not paper designs) with more stages? (Seems like the Soviet N1 should count as real, since they tested a physical rocket, even if it never succeeded).