Love this car. It corners so flatly that it almost begs you to take it around corners even faster. The straight-six is ultra smooth, and strikes a good balance between low-end power and a willingness to rev.
Reliability has been excellent, and build quality is pretty good (BMW's are good, but Japanese cars still have the best fit and finish). I rated gas mileage as average, but I think that's probably because I never let off the gas pedal : )
A glass rear-window would help. Plus it could use a better manual transmission. I like Honda/Acura transmissions better - I've crunched the Z3's several times during quick shifts, something that happened only twice in the 3 years I drove an Integra.