The Epley maneuver:
The Brandt-Daroff maneuver:
From ehow.com:
Vertigo is a disorder of the middle ear, caused by small crystals that have colonized in a sensitive part of the inner ear. These crystals become displaced, causing the dizziness of vertigo. Usually a physician who specializes in dizziness and balance disorders will perform The Epley or Semont maneuver to help settle the displaced crystals. The Semont maneuver is a calculated and rapid moving exercise, performed only by a doctor in the safety of a doctor's office. Brandt-Daroff exercises are similar to the Epley maneuver, but they can be done at home. These exercises can benefit anyone with dizziness, vertigo, imbalance, lightheadedness or faintness. They are safe and easy to perform.