Houston has a nice tradition of short-form improv, so it was nice to see a change of pace this year with The Greatest Thing in the History of the World. The long-form improv troupe works in the style perfected by the Upright Citizens Brigade. (In fact, many of the members of GTHW have trained with UCB in NY — oops, we mean New York.) For those unfamiliar with long-form improv, it's like a Saturday Night Live skit that's created on the spot. GTHW is introducing Houston to the style at venues such as Rudyard's, the Proletariat and Walter's on Washington. Their name might be too long to remember, but it's also pretty hard to forget. So keep your eyes out for the next flyer to find out why size matters in instant comedy.