Four bikes:
1) Single Speed - primary commuter and around town bike
2) Surly LHT - touring, gravel, trailer towing, and I'm going to use it for a 'cross race (I know, I know)
3) Long-wheelbase recumbent - used to be my primary bike, but it's now relegated to when my neck issues flare up
4) Dahon folding bike - travelling and loaner bike

I still need:
Mountain bike
Fast road/brevet bike
Dedicated gravel bike
Longtail Cargo bike