Houstonist defends our fair city to naysayers all the time. They say, "Houston sucks. I was stuck at the airport and then at my relatives' place in Pearland." "That's Pearland, jackass. Not Houston," we reply. "You should hang out with us instead. We'll show you our Houston." The Greater Houston Convention & Visitor's Bureau has formalized this approach in the form of the "My Houston" publicity campaign that will involve local celebrities (HELLO! Where's......