Says TV Guide:
According to multiple sources, ABC plans on airing this season's final batch of Lost episodes on Thursdays at 10 pm/ET beginning in late April, where it will follow all-new episodes of Grey's Anatomy
NBC has picked up its freshman drama series "Chuck" and "Life" -- as well as its hit "Heroes" -- for the 2008-09 season, it was announced today by Ben Silverman, Co-Chairman, NBC Entertainment
Also from NBC:
NBC will resume the broadcast of many of its scripted series in April with new original episodes following the settlement of the Writers Guild of America strike.
The list of comedies and dramas includes: "My Name Is Earl" (Thursdays, 8-8:30 p.m. ET), which will return with a one-hour episode on Thursday, April 3;
"30 Rock" (Thursdays, 8:30-9 p.m. ET) will begin on Thursday, April 10; likewise, the Emmy-winning "The Office" (Thursdays, 9-9:30 p.m. ET) also resumes with new episodes on Thursday, April 10; and "Scrubs" (Thursdays, 9:30-10 p.m. ET) will come back with original episodes beginning Thursday, April 10.
"ER" (Thursdays, 10-11 p.m. ET) also will come back on Thursday, April 10 with new episodes following the complete run of "Lipstick Jungle," which concludes on March 20.