The Ducati 916's are truly beautiful and iconic bikes, in my opinion. The '90 - '97 VFR 750's are also gorgeous.
that!
2nd to that, the Honda SuperMagna (in dark blue) from 1987 is a bike that'll stay in my heart. I was living in Argentina in 1995, finishing engineering at university, and a friend of a friend of a friend just imported a VF700C from the US of A, 1985 model. I had it for 3 years and had a blast with it, but it was ugly. Years later I saw the SuperMagna in a magazine and promised myself I'll had one one day. Not yet, though