In the news this week are several reports of an exchange between syndicated talk-show host Mike Gallagher and actor-turned-leftist-poster-child Edward Asner. The account goes like this: Mike Gallagher approached Asner at a recent cocktail party promoting the new film "Elf" in which Asner stars as Santa Claus. As Gallagher introduced himself, Asner asked his profession. When Gallagher replied "radio talk-show host," Asner replied, "I love going toe-to-toe with you guys.'' ''I know,'' Gallagher replied. ''I've heard you on Sean Hannity's show.'' ''Hannity's next, you know,'' Asner responded. ''Huh?'' said Gallagher. ''Hannity's next,'' said Asner. ''We're going after him just like...