Companies that Do Answer Their E-mail (and then some)

The CD Connection has great customer service. They bent over backwards to resolve a defect that wasn't even their fault.
Circus Circus management wrote me a very lengthy and constructive response to my concerns about a negative experience that I had while in their care. They copied every person who could possibly have had a positive effect on the situation.
KPST, Channel 66 provided a totally personal response, gave me what I wanted, and more.
L.D. Brewer himself made sure in advance that I would be a happy microbroadcasting customer and then delivered the goods.
Nissan, USA gave me surprising info about a yet to be announced product.
Ramsey Electronics' webmaster gave me a literal Ph.D. disertation even though it was probably his 470th e-mail of the day.