Living in the Lightning capital of the world (Tampa Bay, FL) with a power company that loves sticking it to us with rolling brownouts, I've learned the hard way (one month old LCD TV died after a 3 in a row set of brown outs) to protect everything with UPS units and not to rely on surge suppressors. As from what I've been told the abrupt voltage drop and return can do some major damage to electronic equipment that a surge suppressor doesn't seem to protect against.
All my computer equipments as well as my A/V stuff is hooked through UPS units (I have about 6 of them). Even though it only gives perhaps 3 to 4 minutes of battery power on my HTS and LCD TV, that's enough to protect them from a brown-out and enough time for me to turn everything off in case of a power failure. It's cheaper to replace a $40 to $60 UPS than a $800 HTS or $600 TV. Or $200 NAS.