On the third disc of the DVD set, they have Kaitlin's audition. They had no dialogue for Sweet Dea, so they just had her read the scene where Dennis found out Charlie has cancer. It's piss-your-pants funny. She's genius at playing a girl with Dennis' asshole personality. The way she stays so detached and never really gives a shit about this "heartbreaking" stuff is one of the funniest things I've ever seen. It's even better because the scene goes on and on, it's at least twice as long as the Dennis/Charlie bit in the episode.
Also, hearing the guys say "fuck" all over this DVD makes me wish this was on HBO. It's so liberating. I haven't been this amused by hearing the f-word since I came across it for the first time (on film) with Clear and Present Danger. Not that Charlie has anything on Mr. Willem Dafoe in the comedy department.
This DVD set is like crack. Really kickass crack. It's easily my #1 "show-I-have-to-make-everyone-I-know-watch"....show. It was hard to do with all the episodes on my Tivo/DVR, but now I can pass them these little scientific video discs and watch the magic happen.