Most people would get excited if a TV crew came to their neighborhood. Even though hes in show business, comic Rodney Laneyis no exception, although even he has to wonder about what he sees sometimes. They filmed an episode of that Trauma: Life in the ER in my neighborhood, and this dude came into the emergency room with a knife in his head, he offers. I mean, how mad do you have to be at someone to stick a knife in their head? Laney doesnt know but hes keeping an eye on fans who play with the silverware at his shows. 8 p.m. Thursday, 8 and 10:30 p.m. Friday, 7, 9 and 10:45 p.m. Saturday. Laff Stop, 526 Waugh Drive. For information, call 713-524-2333 or visit www.laffstop.com. $15 to $20.