Political Twins in History; what's happening at the Convention; the new Obama campaign commercial; our team of political analysts standing by; Biff Henderson at the Democratic National Convention, and a Top Ten list presented by First Lady Michelle Obama. TOP TEN: REASONS TO WATCH THE DEMOCRATIC NATIONAL CONVENTION - and to present tonight's Top Ten list, plausibly live, First Lady Michelle Obama. You know her from the Harry Potter films. She now stars in a new film, "The Perks of Being A Wallflower." Emma spent the summer in Iceland working on another film. She's the host of the CBS daytime talk show, "The Talk". Julie is pleased that Dave is so familiar with "The Talk". Dave's political analysts: insight or incoherent?

While HankMed treats a high-strung student for a bad case of nerves, her easy-going romance novelist mother falls ill as well and Hank must race to diagnose the two seemingly unconnected conditions.

Brit Hume critiques the DNC convention noise level, Michelle Obama rakes in record tweet numbers during her speech, and Michael Grunwald explores the Recovery Act.

From "The Words", actor Jeremy Irons; from "Parenthood", actress Monica Potter. Gerry Dee preempted and only appeared during "What Did We Learn on the Show Tonight, Craig?".