What's the best way for a comedian to jump-start her career? The good ol' TV guest appearance. Recently, Brett Butler, a veteran of her own sitcom, Grace Under Fire, made excellent use of her guest spot on My Name Is Earl, playing Earl's white trash ex-mother-in-law. She pretends to be confined to a wheelchair while gambling away her daughter's new car; when she's discovered swindling the family, her defense is simply "Dontchoo' judge me!" If Butler can work those kind of laughs in 22 minutes, she should be gold in a 90-minute set. 8 p.m. and 10:30 p.m. today and Saturday, February 4. For tickets, call 713-524-2333 or visit www.laffstop.com. $29 to $31.