I have three that are ride-able.
One is for pulling the kid around on the trail-a-bike (franken-bike cobbled together from bits of old mountain bikes).
One is my main commuter and general all-around bike (Surly LHT).
One is for group rides and long and/or fast solo rides (Felt z90).

I have four bikes in the basement that need work. Three of them were curbside finds, and one is my old recumbent.