Seven! "WSD" is irrelevant when a bike is an "Owner Specific Design"
Treks and/or Specialized are good for getting folks in the door. Everybody knows them. Everybody has them. Wide range of bikes in their lines - from the newb to the racer.
Gunnar or Surly for the cool kids.
Bianchi for the touring crowd who values beauty as well as a great ride.
And a good assortment of kids' bikes so folks don't feel like they "have" to get their munchkin's first bike from Target or WalMart.

As for clothes....I'd definitely put Terry on the list. Castelli and Descente, too. And Pearl Izumi for the same reason as the Treks.