Standard stuff: brake condition, look for leaks underneath the car - especially after the test drive - check out the engine oil dipstick, look under the engine oil cap, look in the coolant reservoir and under coolant cap (do that last one before car is warm) for signs of funkiness. Check all speakers individually using fad/balance, all electronics one at a time. Do the test drive with audio off. Check all gears. Feel for alignment issues, do a carfax report, make sure that all panels line up to show possible signs of body repair. Look at suspension. In a parking lot at low speed with wheel turned fully to the side (do a side at once) drive and see if you can hear clicking. Check all lights.
The list could go on!
Anyway I can't think of anything really in particular about your car that you could necessarily tell on a car review of this nature.