I quite like black-dogs - 'Sometimes I just turn it off and on again' - maybe promotes the wrong image lol. I agree that the site could do with a new logo.
"There are 10 types of people in the world. Those who understand binary and those who don't."
or
"Keyboard Error, Press F1" another one of my faves.
Are you looking for a graphic or slogan for the back?
"I wear this T-shirt for bandwidth!
www.webhosting.uk.com"