sometime surge protectors only do half a gob.
sometimes for AV equipment (and LCD / plasma) is may be an idea to go for an Uninterruptible Power SUpply (UPS).
It has a surge protector to help elimitate those spikes going to your equipment
a battery backup which gives 10 or more minutes (depending whta you are using) of power from the battery should there be a power failure.
There are a few around - Belkin do some.....
Most electricaly / pc shops would do them..have even seen some in carrefour (Zaapa) which keeps my Sky+ going quite well....but have belkons on the PC's....