Wow, this one misses all my marks!
CB/CL72/77, Black Bomber (surprise to many Triumph riders!), CB/CL350 (one of the most successful bikes in history), the Big Four, the CB350F ("Nah, nah, na-nah, nah - look what we can do!), the CBX (the last word in bike techno-demonstration for the last century, "just because we can"), the [1980-82] GoldWing, and the V45/65 platform that scares more riders into selling them than keep them!
I've also thought the CT70 was just pure genius in street-legal trim: during the Gas Crisis of the 1970s they were on the road more than any other bikes where I lived then.