04/07/2008 at 01:00 AM EDT
In her new Showtime series Tracey Ullman's State of the Union
(premiering March 30 at 10 p.m. ET), the British comic suits up as everyone from Suzanne Somers to Judi Dench. Her David Beckham
(!) falls flat, but as Dina Lohan and Renée Zellweger—the latter says she suffers from "chronic narcissistic squinting"—Ullman scores laughs (and maybe earns a few grudge matches).