I like good, comfortable seats. When you drive an hour every day to school (when there's little traffic), and an hour back, along with a half hour drive to work, good seats are very important. Leather's my personal preference. I dunno about the cruise control, it makes me go to sleep so I never use it. Heated is also important.
HID lights are quite important too!
I'm going against the grain (maybe not here with the enthusiasts though) when I say that I don't like sound deadening. A small amount is nice, but I rather like hearing what's going on outside (road noise isn't an issue for me). I drove my moms Lexus once and hated it. It was like driving in a coffin.
I also don't use the moonroof in my car (or is it a sunroof? I never understood the difference). It just seems rather silly.
Oh, and (jumping back and forth here) my car seats need to be lighter than black. In Georgia, black seats get very very hot (another problem with my moms Lexus, black leather. It's impossible to just get in and drive when it's been sitting around for a few hours because you'll burn yourself.)
A good audio system is a must as well! I love music.
The car has to be powerful too. I won't demand a 6-cylinder because of the S2000 and RX-8 (and other cars which are getting great power from smaller engines) but I can't deny how nice it is when I go WOT in my VQ35DE (only an Altima though, so it's slightly detuned from the awesome iteration found in the 350Z). That's another reason why sound deadening isn't terribly important for me.
I guess after looking at the above, I'm not really a luxury guy. Give me a good powerful car with a good audio system (or a good intake/exhaust setup, same thing

) and leather seats (really the only two bits of luxury I need) and I'll be happy. Not even really picky about the transmission, but I wouldn't say no to a manual

.