U.S. Rep. Virginia Foxx took some more heat yesterday for her remarks on Roger Clemens.

The Banner Elk Republican was ribbed by "The Daily Show" host Jon Stewart in a segment on the hearings on performance-enhancing drugs in baseball.

Stewart showed a brief series of clips of Republican members of the House oversight committee defending Clemens, ending with Foxx asking Clemens about "how hard you work at keeping yourself in shape." (Watch here at 6:31.)

"Yes, what's your secret?" Stewart mugged afterward. "Perhaps some formula you'd like to tell us about?" 

She was also criticized on grammatical grounds by UNC-Chapel Hill journalism professor Andy Bechtel, who noted that she meant to ask about his "regimen," not his "regime." 

"A word mixup by a member of Congress at a hearing, for example, is less forgivable than one in a phone conversation," he wrote on his blog. "Politicians are supposed to be eloquent and prepared."

Jon Stewart's fans are a pretty knowledgeable bunch, but so are Bill O'Reilly's.

In an aside on a post yesterday about the Virginia Tech shootings, Durham blogger Chris Kromm of the Institute for Southern Studies argues that two WRDU radio hosts are ill-informed, perhaps because of what they watch:

maybe it's Fox News, which a recent Pew Center study found was the news source most likely to produce uninformed viewers (those most up on current events, Pew found, where watchers of The Daily Show and Colbert Report on Comedy Central).

But click through to that study and you'll see two things wrong with the summary:

* The audience for "The Daily Show" and "The Colbert Report" was essentially tied with that of major newspaper Web sites, Jim Lehrer's "NewsHour" on PBS, "The O'Reilly Factor" on the previously mentioned Fox News Channel, National Public Radio and Rush Limbaugh's radio show.

* The study does not say that watching the show informed the audience, necessarily.

As the authors write:

The fact that a particular news source's audience is very knowledgeable does not mean that people learned all that they know from that source. As noted earlier, some news sources draw especially well-educated audiences who are keenly interested in politics.