Tony Ruscoe does it again -- he has compiled a list of internal Google subdomains for a guest post on Google Blogoscoped. Some of these domains have been discovered by other people (do a search for "corp.google.com"), but Tony has also acquired a list of internal subdomains that are only accessible from inside Google.
A few of the interesting domains he mentions include opposites:
good.corp.google.com and evil.corp.google.com
heaven.corp.google.com and hell.corp.google.com
cat.corp.google.com and dog.corp.google.com
you.corp.google.com and me.corp.google.com
yes.corp.google.com and no.corp.google.com
stop.corp.google.com and go.corp.google.com
tea.corp.google.com and coffee.corp.google.com
and the seven deadly sins:
I don't know where Tony got the list -- but with his outstanding digging ability, I have absolutely no reason to question his findings.