Copying and pasting my post from the other WRRR thread (this was from June, keep in mind):
I rushed it for George Takei's performance. I got there at about 10 (tix released at noon), 2nd person at 10:30, and maybe 10 people in line by noon. The box office person told me that they actually hold aside 8 rush tickets for every performance, so they will always sell them. He also told me that the craziness of the rush line vies greatly depending on who the performer is, and how popular they are.