When I rushed, there was one house that just didn't impress me at all.
They asked rushees what their parents did for a living -- tacky!
They didn't take the skit seriously at all, and kept messing up and laughing through it. You're not joining the house for the skit, but it shows how serious they are about making a good impression on you, and this was obviously not something they were too worried about.
The conversation I had with a girl at Pref was exactly like the one I had on the first day. ("Where are you from?" "What's your major?" blah blah blah.)
At another house, one of my rushers and I got onto the subject of drivers' licenses, since my sister was about to get hers. We were relating funny driving stories, and she told me about the time that she had accidentally broken the side mirror off some car in a parking lot and then drove off without leaving a note for the car's owners or anything. I don't think you want to be giving the impression that all ABCs are juvenile delinquents . . .
I liked that house, but I think that ABC's story caused me to rank it lower than it otherwise would have been.
At another house that I LOVED, apart from this incident, I was rushed by a girl with a mouth like a sailor. I only talked to her for about 3 minutes, and I know she at least said "No isht!" and "You're f@$!ing kidding me!" during the time I talked to her. Who does stuff like that during rush?
Also, I agree with the sitting on the floor thing -- it's so hard to get up without flashing the entire room if you're wearing a skirt!