What is it and why?

My favorite one so far I think would be in the episode where the efficiency expert Andrea gives Lisa Dave's job, and then Dave starts his "streak of evil". Dave and Katherine are sitting in the break room, and Katherine is helping Dave become more evil. She asks him to get her a soda. Dave stands up and says "ok", then he turns around and says "Get your own damn soda" with this sort of evil grin on his face. I think that is hilarious!

I LOVE the one in my sig...that's an awesome episode! And the whole Boston thing.., "Up yoas, yah loseh!" "Will yoo grab me a bottle uh wata?" "My stapla...my computa" *cackles*

I love that one too (the bitch one) and one of my favorite episodes is the one where Lisa's Boston accent comes back...it cracks me up every time she says "up yous ya losa", and I also like the one where Matthew comes back from therapy and thinks that lisa is a witch and tortures him...