We have a de Havilland DHC-2 Beaver on EDO floats.
Other planes I have flown extensively include a 270hp C180 on floats (here), a Turbo206 on wheels (here), and a C206 on wheels in Hawaii.
Also in Hawaii I flew a single-engine Grumman American AA-1, a Citabria, Rockwell Commander 112 and 114, C150, 172, 182 and C150 Aerobat and a Mooney Chapparal.
I got my Private license in Hawaii in a Piper PA-28 Cherokee and also flew the Cherokee 180 and Cherokee Six. I got the rest of my ratings/licenses in Cessnas.
On floats I also have some time in a Turbo Beaver re-engined with a Pratt & Whitney PT6A-135 and a turbine conversion of the DHC-3 Otter, also with the PT6A-135. I flew a Cessna Caravan on wheels a few times but not enough to be able to claim familiarity with it.
PS- For a project at work I bought one hour in a helicopter to experience what it's like to fly one. We spent the whole hour learning to hover. I never got more than five feet off the ground and to date it is the single hardest thing I've ever tried to do in my life.