1. 1960 Cedric 1500 - without it, there would be no Nissan
2. S30 Fairladies (240Z, 260Z) - without it, the world wouldn't have respected Nissan as a sports car manufacturer
3. Prince GT-B - great great grand pappy skyline (w00t marvin)
4. C10 GTR - great grand pappy skyline
5. R32 GTR - reinvented Nissan's sports car
6. Mid4 version 2 - prototype, but without it there'd be no 300ZX or R32 GTR
7. R35 GT-R - no doubt will put Nissan as a leader in sports car manufacturers, just like its predecessors, but this time, on a totally global stage.
8. U13 Bluebird SSS - put nissan on the rally map
9. A32 Nissan Maxima - unfortunately in my top 10, not for the car, but for the VQ30DE engine it sported, which has won many design awards for nissan
10. K12 Nissan March - dunno why but I'd own one in a heartbeat (providing I could strap a turbo kit on it)