It depends. When you do shoulder rehab you follow a specific program that is aimed at correcting an underlying orthopedic condition such as stiffness, impingement, instability, or a rotator cuff tear. Different problems call for different rehab programs. Without more specific information as to what your problem is, its not possible to say exactly what exercises would be part of your rehab protocol.
Stretch and strength. A shoulder rehab program involves restoration of range of motion (stretching) and reconditioning of shoulder muscles (strengthening). This type of program will focus on the rotator cuff and the muscles around the shoulder, including the muscles that stabilize the shoulder blade.