Definitely one of the nicest cars on the road IMO. My brother and all his friends have them, and hes been trying to get me in one for a while, but I just don't feel comfortable enough financially for a BMW of that caliber. They don't feel super quick in stock form compared to a lot of cars in the same price range, but they are great cars. Definitely a drivers car, so much fun.
One thing you can do, if you know anybody, or are interested in learning it on your own (Just requires a cable, and you can follow instructions online) is converting some of the electrical elements to euro spec. Cheap, (free if you know someone with the cable) and it will keep you smiling for a long time. Euro spec lets the windows roll up using the key (as apposed to just being able to roll down), euro blinkers (blink very quickly), you can make the back windows close with 1 touch, turn your parking lights on with the key (sweet if you have halos), and a few other cool things... Its pretty sweet.
Heres my brothers youtube channel:
http://www.youtube.com/user/fstrnr1 you can see some of the features im talking about on it.