I'd have to go mostly to the 60's and 70's to populate a list. The new cars are cool but they can't beat an XKE, a 280SL, GT40 and others back in the day.
I'd love an XK120 but I would take a 140 or 150 at a push. However, my ultimate Jaguar would have to be a MkVII. And that is a Jag You Ar. Not a Jag Waar.