Zachary Levi by Mitchell Haaseth/NBC Zachary Levi by Mitchell Haaseth/NBC

Don't like repeats? No problem. NBC plans to kick off the fall runs of Chuck (Mondays at 8 pm/ET) and Heroes (Mondays at 9) by airing as many as 13 consecutive new episodes of each series, says SciFi.com. From there on, you may have to concede the occasional "encore" or other interruption.

The Peacock also plans to move Medium to Sundays at 9, effective late 2008/early 2009. - J.R. Whalen