David Bianculli

On the upcoming live episode of NBC's The West Wing, Congressman Matt Santos (Jimmy Smits) and Senator Arnold Vinick (Alan Alda) will meet in a one-hour presidential debate. Sunday evening, their conflict will be aired live.

Henry Winkler plays a doctor on the new CBS sitcom Out of Practice, which premiered last month and can be seen Mondays at 9:30 p.m. Winkler also spent two seasons playing a lawyer on the TV series Arrested Development.

The major networks and several cable units are offering up new seasons in September. A new HBO comedy, Extras, stars Ricky Gervais, who remains best known for starring in and helping to create the original British version of The Office.