Someone in the past year did a stunt where they sold tickets (I think it was tickets) at a really incredible rate, for a very short time - much like what we say this weekend, well ok, not that good, but really good. I remember in thier issueing of a press statement when asked if they would do it again, they said something to the effect of "We may, we may not, people will just have to watch carefully".
I'm kicking myself because I can't remember which company it was.