my quiver seems to fluctuate year by year, but currently:

Rock Lobster custom track
Langster (not stock) track
LOOK road
Ventana single speed mountain
Lemond cyclocross
Specialized touring bike (for wet weather commuting)

Don't even get me started on the spare wheels, forks, bars, etc...
I've always considered selling some stuff, but then I just telling myself that it is worth way more to me then the little money I could get from selling it. Plus, it's nice to have spare parts when my stuff brakes, or I can help out a friend in need.

No more bikes for a while though...as I just spend a wad on an engagement ring (damn that would have bought a nice new mountain bike). And my girl said if I get one more this year I'll be sleeping in the garage with them.