This The Office screencap contains
business suit, suit, and suit of clothes.
There might also be
three piece suit, pinstripe, dress suit, full dress, tailcoat, tail coat, tails, white tie, and white tie and tails.
I haven't been able to get my grubby hands on a full episode, but here are the JAM scenes. You may not want to watch these if you haven't scene the full episode.
Since we have no idea when S4 will continue, lets take a look at what has been accomplished so far. Bear in mind this is a work in progress for that reason. [Credit jazzman201]