Just about everything:
Automatic transmission (2x).
Air conditioner (2x).
Power antenna (2x)
CV axles (3x)
ABS system.
A/C heater blower motor.
Tie rods.
Drivers door power window regulator.
Engine control unit(ECU).
Throttle cable.
Leather seats.
Alternator.
Water pump/timing belt.
Master cylinder.
Master power window switches.
Throttle position sensor.
Front map and courtesy light fixture.
Glove compartment.
This car is very expensive to maintain and I know it's old, but his car is in excellent shape and it still kicks butt with almost 200,000 on the clock.
On 11-26-02 the shift cable broke on my 88 sedan so now I can add another thing that has gone south. Acura dealer wanted $185 for shift cable and 1 hour labor ($85) to repair.