4. Jon Stewart
Now entering his fifteenth year behind The Daily Show's anchor desk, Stewart is approaching Carson-Letterman territory as a late-night institution. In the early Bush years, he single-handedly obliterated the cliche that liberals couldn't be funny, skewering politicians and the pundits who cover them while effortlessly merging satire with substantive interviews, like a cross between Tim Russert and Mort Sahl. He's made an art of vaporizing cable news blowhards like Bill O'Reilly and Jim Cramer, but he's never been afraid to take on respected public figures at the height of their popularity and power. He recently called out fellow New Jerseyan Chris Christie for attacking Barack Obama's leadership skills on the campaign trail, then praising them when his state needed help after Hurricane Sandy: "I see," Stewart said. "So he wasn't a leader until you needed leadership." He remains the most trusted name in news for people who don't trust the news.