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