The Peacock plans to discontinue its supersized sitcoms. According to TVWeek.com, the net believes that starting shows at odd intervals like 9:23 pm was frustrating viewers, not to mention confusing TiVos.... TNT and TBS will stream all of their original summer series online, says BroadCastingCable.com. Existing hits The Closer and My Boys and newbies Heartland and Saving Grace will be available the day after they're broadcast.... Literary agent Tony Cowell - aka Simon's spotlight-starved sibling - will be the head judge of Bestseller, an American Idol-like reality competition for aspiring scribes airing on British TV.... Comedy Central is developing a new slew of controversial comedies, including the bank-robbing laffer Held Up, the Arab stand-up showcase The Watch List and David Alan Grier's Chocolate News. (We miss you, Dave Chappelle!) - Reporting by Raven Snook