amused at work?
hmmm depends what your firewall lets thru
www.b3ta.com,
www.somethingawful.com and
www.fark.com are places to start if you can hack the vast number of in-jokes. i've banned myself (using router's block-list) from 2 of them and the third will swiftly follow.
just trying to remember the name of some place i periodically get linked to that has tons of all those great email attachment things...