The F-16 looks like a fighter plane. It is a beautiful, light nimble aircraft that looks like it means business.
The other aircraft I put into that category are the Hellcat, the P-51 Mustang and the F-86 Saber. Maybe even the Mig-29. While I appreciate all fighter aircraft, when I think fighter I think of those planes.
I would include the F-14 Tomcat. All business, and the swept wings are cool.
Not a fighter aircraft, but the Warthog is all business, too, in a different way.