The best one I've heard her say (And I've seen the show 12 times, thank you.) was on Marissa's last day. I don't remember exactly, but she had done her little scream that she does, then just climbed up the stage. I was like, "She isn't going to say anything?!" Well, she turned to the audience,and goes... "Confused? Let's review! The story starts off with a chubby little girl who wants to be on TV..." Then she quickly summed up the rest of the show, if I tried to repeat it, I'd butcher her brilliance, so I'm not going ot try.
Someoen posted this already, but forgot part of it... On Harvey's last day, she got on stage and goes. "Guess who's in that can! It's Nathan Lane and Matthew Brodrick!" (No, I can't spell.) SO then she turns do do her real line, but stops, turns back to the audience and goes "AND P DIDDY!" Lol. It was realy funny. The delivery and all. Harvey had some amusing ad-libs at his last show too, but I'll save those for another day.
I'd rather laugh with the sinners than cry with the saints.