During my primary training, my instructor "informed" me that the yoke had completely failed (ie no direct control of ailerons or elevator). We then proceeded to make a very smooth landing using trim and power for pitch and the doors and rudder for bank. (Cessna 152).
Obviously the type of aircraft will depend on which surfaces you have at your disposal to extend into the slipstream but practicing this sort of emergency is very useful.
Having subsequently taught these emergencies, the best advice I would give is to make all movements very slowly - long, shallow finals are preferable.
On another note, I once taxied over a metal post in a Citabria that was very difficult to see as another aircraft had hit it and bent it over a few days before. It happened during the taxi to the runway and it ripped through the fabric and sheared the bell crank in half (this is the linkage that allows the ailerons to turn). We were taxying back to depart straight after a landing so the normal pre-takeoff checks would have very much been abbreviated but we nonethless checked everything and found that aileron control had been completely lost.
No matter what happens nowadays, I always give the controls a quick check before takeoff. I also teach the "thumbs up" method. If you hold the stick/yoke with a thumb extended upwards, the "up thumb" should always point to the "up aileron" when doing this check (it is not completely unknown for these controls to be rigged backwards - especially following an inspection).