[Televisionary]

Welcome to your Wednesday morning television briefing. Jason Lee ( My Name is Earl ) has been cast as the lead in TNT drama pilot Delta Blues , where he will play Dwight Hendricks, a Memphis cop who moonlights as an Elvis impersonator and lives with his mother. Pilot, from Warner Horizon and Smokehouse Pictures, is written by Liz M. Garcia and Joshua Harto and will be directed by Clark Johnson, who will executive produce with George Clooney and Grant Heslov. ( Hollywood Reporter ) Proving that the series' casting directors have inherited the comedy casting mantle from Arrested Development and 30 Rock , Fred Willard ( Back to You ) has signed on to guest star on an upcoming episode of ABC's Modern Family , where he will play the father to Ty Burrell's Phil. [Editor: look for Willard to turn up, oh, before the end of the calendar year.] ( Fancast ) Gretchen Mol ( Life on Mars ) has joined the cast of HBO's upcoming period drama Boardwalk Empire in the recurring role of

Fans of Agatha Christie's Hercule Poirot, the funny little Belgian detective famed as much for his fastidiousness as the fact that he's the self-proclaimed most famous detective in the world, have long waited for actor David Suchet to slip back into the role. That wait is over as PBS' Masterpiece Mystery will this month offer the US premiere of two new Poirot mysteries starring Suchet as part of its "Six by Agatha" season, which features not only two feature-length Poirot mysteries but also four Miss Marple whodunits, starring Julia McKenzie ( Cranford ) as Miss Marple herself. The two mysteries, entitled "Cat Among the Pigeons" and "Mrs. McGinty's Dead," will seriously put Hercule Poirot's famed "little grey cells" to the test as he must contend with two very different murder scenarios. In the first, "Cat Among the Pigeons," the Belgian detective goes undercover at the Meadowbank School for Girls, where he encoun