As previewed last week, Grumpy Cat emerged as one of the biggest celebrity draws at BEA last week, with convention-goers lining up by the Chronicle booth for almost two hours. “Just 15 minutes into the event, the crowd was so anxious to get close to Grumpy Cat that the BEA organizers called for two extra security guards to maintain the peace,” the WSJ blogged. By their account the cat, whose actual name is Tardar Sauce, “seemed unphased” and “managed to sleep through most of her event” (though witnesses told us they thought the cat looked drugged rather than just sleepy/grumpy). […]