If a friend drives your car and is charged with DUI and gets in an accident does your collision coverage cover the damages?

depends on your and his insurance, generally insurance follows the driver not the car. so your insurance shouldn't care, their insurance should pay for everything. If they don't have insurance, then your uninsured motorist might cover it. It depends entirely on your company, but if your company pays then your premiums will go up. The person they hit should have insurance that may cover it. I see no reason why your insurance should be involved.