CHARLA'S GONE MAD!: Fox's MADtv is extending Amazing Race fave Charla Faddoul's 15 minutes of fame. The 4-foot-tall reality phenom and her less-popular cousin, Mirna, will make an appearance on the sketch comedy's Sept. 18 season premiere. In their skit, titled the "Amazing Presidential Race," Charla and Mirna help Ralph Nader defeat Kerry and Bush for president. Actually, Charla helps him while Mirna sits around and does nothing.