* Monica Lewinsky has expressed interest in studying law, but yesterday she got to teach it. The infamous former intern was guest speaker at Neal Katyal's "Clinton" class at Georgetown University Law Center. The semester-long course for second- and third-year students explores the myriad constitutional issues surrounding our president's numerous legal problems. Crossing and uncrossing her legs, she confided to her 65 "students" that she was "having a bad hat day," and then removed her Chateau Marmont chapeau, according to a witness. We don't know what else Lewinsky said--she was granted the law school version of immunity--but another witness told us she was very "articulate and thoughtful."

* In case we lacked for proof that Congress takes care of its own, Rep. John Murtha (D-Pa.) hosted a lovely party in the Rayburn Building for lobbyist Ann Eppard yesterday, four days after the former chief of staff to Rep. Bud Shuster (R-Pa.) pleaded guilty to a federal corruption charge. "We're just welcoming her back to the real world," Murtha told The Post's Juliet Eilperin. Eppard was fined $5,000 for a misdemeanor violation of pocketing $15,000 from a lobbyist while working for Shuster.

* Dueling reunions tonight: Former senator Gary Hart and 200 veterans of his 1984 presidential campaign, including singer Carole King and possibly even Warren Beatty, will party hearty at the Mayflower Hotel. And about 100 alumni of Dunnells Duvall Bennett & Porter, a law firm that imploded after Robert Bennett and Steve Porter left for greener pastures, will celebrate old times in the Warner Theatre atrium.

* Marlene Kent Cooke is grounded. Yesterday D.C. Superior Court Judge William H. Jackson ordered her not to operate a motor vehicle pending her Jan. 13 sentencing on a drunk-driving conviction.

For Shaw, Something To Smile About

* "I'm almost monomaniacally serious about realizing my role," CNN uber-anchor Bernard Shaw told us yesterday. "It's the requirement to be right, to be dispassionate and never to take sides. Consequently, a lot of people say, 'He never smiles.' Well, there's not a helluva lot to smile about in our business."

But the 59-year-old Shaw might allow himself a tiny grin. On Monday in New York, after 35 years in radio and television, he'll be inducted into Broadcasting & Cable's Hall of Fame, an honor previously accorded his idols Edward R. Murrow, Lowell Thomas, Walter Cronkite and David Brinkley.

Making Sense of Bill Bradley

Now is Ernestine Schlant Bradley's 15 minutes of fame. Suddenly this bookish and very private professor of comparative literature, who speaks with a German accent, is granting network television interviews about what her father, a Luftwaffe officer, did in the War; about her ordeal and triumph over breast cancer; and about the fact that, at 64, she's eight years older than her husband, Democratic presidential candidate Bill Bradley.

"It's not that hard--these are things I'm very familiar with," she told us this week from South Carolina, where she was campaigning to become the country's first foreign-born first lady. "I'm very comfortable talking about these things, and so far I'm having a good time, knock on wood."

Schlant, as she calls herself professionally, has taught since 1971 at Montclair State University in New Jersey, the state the former pro basketball star represented in the Senate, and has written such densely argued academic texts as "The Language of Silence: West German Literature and the Holocaust," in which she tweaks Nobel laureate Guenter Grass for giving short shrift in his novels to the Third Reich's victims. But these days she spends most of her time interpreting her husband. "Bill's excitement is always a kind of low-burning excitement," she said. "He gets very involved, he just doesn't emote. When he was playing basketball, one night they would cheer him and the next they would boo him, but Bill remained constant."

Got a hot tip or a nagging question? Dish with Lloyd Grove today at 11 a.m. EDT at liveonline.

CAPTION: Here's our end-of-millennium version of Elvis and Richard Nixon. Cause Celeb Bono of the rock band U2 was on Capitol Hill yesterday lobbying Republicans and Democrats--including Sen. Christopher Dodd (D-Conn.)--to get the U.S. government to forgive $1 billion in Third World debt over the next four years. "We spent the day mostly with Republicans, because it's very important for the Republicans to be seen as having authorship of this," Bono told us, noting that House Budget Committee Chairman John Kasich (R-Ohio) organized his schedule. "I do realize that this is not a sexy subject.