PASADENA, Calif.–Comedian/ventriloquist Jeff Dunham wanted to help critics out by offering some headlines for his TCA visit today. Dunham is the dude with all those big-headed dummies (no not the critics) he carts up to Just Four Laughs every summer. You know them–his cranky old man Walter, Peanut, Bubba Jr. and Achmed the Dead Terrorist