My latest Dynamic Chiropractic article, Neck Pain; Activation Exercises, includes links to videos of the exercises. Tight muscles are often best addressed by activating the muscles. Especially when soft tissue work or stretching only gives temporary relief.
In observing patients and studying rehab, I have learned that tight muscles are weak muscles and that stretching is sometimes less effective than muscular activation. There is a delicate balance between joints that move too little and joints that are hypermobile.