I'm with Cranky, RC, Budnicks, 747, etc. I guess for me it really depends on the car, and how the interior is done. I see a lot of different interiors I like, everything from full custom, to "bare bones" race interior, to factory, and like a little of everything.
Personally I'm somewhere in between all of em. Planning on basically "day two"ing the factory interior on my Charger, pretty much stock but racing seats, 6 point bar/cage, pretty much stock door panels but without map pockets, Sparco steering wheel, machining some custom interior door handles a lot like the stock ones but a little more "race" looking with spot-faced speed holes, eventually some added gauges (
boost! :grin
and maybe a couple switches will have to go somewhere on the dash if I add line-locks or something. I really like the Charger's original interior design so I'm just adding a little personal touch I guess.
If I had the time/money/skills, I'd like to do a full custom interior on a project along the lines of what Pure Vision does on their cars. Really bad@ss looking custom interiors that look amazing without being too over-done, I love their builds