The following come immediately to mind:

 

Piaggio Avanti

Beech Starship

B-36 (ok, not FAA certified)

All Lake amphibians

Republic Seebee (also an amphibian)

SeaMax (an LSA amphibian)

 

Not yet certified:

ICON A-5 (an LSA Amphibian)

 

I assume we are not talking about jets here.

 

- Rob Wolf