Some newer series will sit out until fall, and others remain contenders for next season, including Friday Night Lights and Las Vegas.
ABC's Lost is expected to save the last of six remaining episodes to air after a four-week break with five new ones starting in mid-April, moving the show to 10 pm ET starting April 24.
The alphabet net has also decided to go out with a bang on May 22, airing the season finales of Ugly Betty, Grey's Anatomy and Lost one day after the official end of the season.
The latest word on what's coming back, when, and how many new episodes are planned:
CBS
How I Met Your Mother (back March 17, 9 episodes planned)
The Big Bang Theory (March 17, 9 episodes planned)
Two And a Half Men (March 17, 9 episodes planned)
CSI: Miami (March 24, 8 episodes planned)
Cold Case(March 30, 5 episodes planned)
CSI: NY(April 2, 7 episodes planned)
CSI (April 3, 6 episodes planned)
Without a Trace (April 3, 6 episodes planned)
Ghost Whisperer (April 4, 6 episodes planned)
Numb3rs (April 4, 6 episodes planned)
NCIS (April 8, 7 episodes planned)
Moonlight (April 11, 4 episodes planned)
Rules of Engagement (April 14, 6 episodes planned)
Shark (TBA, 4 episodes planned)
NBC
My Name is Earl (April 3, 9 episodes planned)
30 Rock (April 10, 5 episodes planned)
The Office (April 10, 6 episodes planned)
ER (April 10, 6 episodes planned)
Scrubs (April 10, 5 episodes left)
Law & Order: SVU (April 15, 5 episodes planned)
Law & Order (April 23, 5 episodes planned)
Medium (keeps airing, 6 additional episodes planned)
Heroes (fall, 22 or more episodes planned)
Chuck (fall, 13 episodes planned)
Life (fall, 13 episodes planned)
Las Vegas (possibly fall)
ABC
Samantha Who? (April 7, 6 episodes planned)
Boston Legal (April 8, 6 episodes planned)
Desperate Housewives (April 13, 6 episodes planned including 2-hour finale)
Brothers & Sisters (April 20, 4 episodes planned)
Ugly Betty (April 24, 5 episodes planned)
Grey's Anatomy (April 24, 5 episodes planned)
Lost (keeps airing; April 24, 8 additional episodes planned at 10 ET/PT on Thursdays)
Private Practice (fall, 13 episodes planned)
Pushing Daisies (fall, 13 episodes planned)
Dirty Sexy Money (fall, 13 episodes planned)
Fox
Bones (April 14, 2 episodes left plus 4 additional episodes planned; moves to Mondays)
'Til Death (March 25, then 5 additional starting April 16 episodes planned)
Back to You (Feb. 26 and 27, then 5 additional starting April 16 episodes planned)
House (April 28, 4 new episodes episodes planned)
24 (January 2009, 24 episodes planned)
CW
The Game (March 2, 9 episodes planned)
Smallville (April 17, 5 episodes planned)
Gossip Girl (April 21, 5 episodes planned)
Reaper (Continuting, 8 episodes planned)
Supernatural (April 24, 4 episodes planned)
One Tree Hill (keeps airing, 9 episodes planned)
Everybody Hates Chris (March 2, 12 episodes left)
Aliens in America (March 2, 8 episodes left)
