With Obama set to wrap up the nomination tonight, Radar's media critic Charles Kaiser grades some of the DNC's featured speakers:

MONDAY

Theme: "One Nation"
Speaker: Teddy Kennedy
Grade: A+
The surprise sensation of the week. The old lion defied doctors and family members to deliver the peroration of a lifetime. It was the most emotional convention moment since JFK was memorialized in film in '64—and Bobby had to stand through 20 minutes of applause before he could speak. (LBJ was not amused.)

Speaker: Craig Robinson (Michelle's brother)
Grade: A-
A splendid newcomer: the basketball coach had a simple, straightforward delivery and
stayed right on message: Barack is just a regular fellah.

Speaker: Michelle Obama
Grade: A
Warm, human, beautifully spoken: a First Lady to be proud of. Bonus points for sitting next to Barack's surprise great uncle, who turns out to be a liberator of victims of the Holocaust. Who knew?!

TUESDAY
Theme: "Renewing America's Promise."

Speaker: Former Virginia governor Mark Warner
Grade: C-
The keynote speaker looked bad, sounded worse and put anyone who was listening to him asleep.(Fortunately, almost nobody did.)

Speaker: Hillary Clinton
Grade: B-
She mouthed the right words—"No way. No how. No McCain! Barack Obama is my candidate. And he must be our president."—but failed to make many of her listeners believe her. She also opened herself up to a classic Nora Ephron moment : the best evisceration of the week.

WEDNESDAY (the only "A" night so far)

Theme: "Securing America's Future."
Speaker: Bill Clinton
Grade: A+
The ex-president understood the politics of the moment much better than his wife did. He knew the only way to redeem himself was to give Barack the endorsement of a lifetime—and that was exactly what he did. Unpleasant memories of the Bad Bill of South Carolina were swept away by the kind of rhetorical flourish that made us fall in love with him in the first place.

Speaker: Beau Biden
Grade: A
In five minutes, the beguiling son of the nominee for Veep made everyone fall in love with his father—and launched the Biden Dynasty (as long as his father gets elected, and Beau survives his upcoming tour with the National Guard in Iraq).

Speaker: Joe Biden
Grade: B+
Competent and attractive, the VP candidate got a huge boost from the presence of his irresistible mother (who kept mouthing, "that's right, I did that" every time he mentioned her.) But Bill Clinton had set the bar just a bit higher than he could reach. [Isn't that just like Bill Clinton?—Ed.]