Benelli Tornado LE, without a doubt.
Ducati 888 and 916
Ducati Supermono, i just love it. Call it a singles thing...
Bimota SB8
Aprilia RS250 flat tail
I think the TESI 3D is stunning too.
I have more, jsut need to remember them.
Oh, the NR75 - Something I could only dream about (hmm not much has changed) back in the 80's. For its time, it looked superb.