TopGear UK is a great show. I used to not get cars, and why people like them so much, before I watched that show. Now, I'd say I'm a bit of a petrol head. It's also cool that the Stig is a bit like a race car driver version of Batman.
I don't much like the US show though. It's just to much like the UK version. It'd be nice if it had more of it's own personality, if you know what I mean.