The TwinCities.com will help you out!
They have a cool party planning guide for Office night!
"Invitations. E-mail messages in memo form, like most corporate communications. Attaching spicy vacation photos, like Michael once did in an e-mail, is optional but encouraged.
Ask guests to arrive at least an hour before the premiere at 7 p.m. Thursday so you have time to watch a few classic episodes on DVD."
Read the entire Party Planning Guide HERE.