Not too sure how it started for me. The first car to really grab my attention (aside from the obvious supercars at the time, which were also pipe dreams) was the 300ZX about 8 years ago. And from there I simply got interested in cars. I was hanging out for Rexes, cos at the time, they and the S14s were the 'affordable' Aus-delivered Jap pocket rockets.
Then the import scene exploded. I was into the 33s, 32s, back to 33s, back to 32s, and the 34s were still out of reach at the time. My friend bought a R33 GTS25t and he let me have a drive in it. I fell in love with the turbo feel. I loved how smooth, free-revving, and how unburstable the straght six felt. The whole Turbo Straight 6 RWD layout just seemed so right to me. The handling, altho short of scintilating, was lively, responsive and fun.
I couldn't afford a R33 (in the year I wanted) when I finally got my Skyline. I settled for a R32 GTS-t, and although it doesn't have the low-down torque of the 2.5L turbo, it still felt characteristically like a Skyline. Also, there is something about those stove-top / afterburner tail lights. Especially at night. I still find myself trailing other Skylines just to gaze in awe of them..