Odd. I thought I probably have flown in about ten or fifteen aircraft types, then I started adding them up and I keep getting reminded of an odd one here or there. Flights I don't think of often. Going through the lists here reminded me of a few more. There were quite a few passenger flights in the seventies or eighties I can't remember the aircraft at all. Sacrilege!
Searey
Auster
Dragon Rapide
Chipmunk
Colt
Tripacer
Beagle Airedale
Auster Terrier
Cessna 150
Cessna 172
Varsity
Slingsby Tutor
Brantly Helicopter
Dragon DH84
Piper Comanche
Blanik
Fournier RF6, RF4
Cherokee
707, 737, 747,
A319, A320, A340,
Cormorant Helicopter
Buffalo
Jetranger
B25 Mitchell
Dash 8
Bombardier Q400
Bell 206
Airbus EC120
Airbus H125 (Squirrel)