Here's an interesting poll: order the five 'major networks' from your most-watched network to least-watched network. If you want, you can add what shows you watch on each one.
The choices: NBC, FOX, CBS, ABC, CW

Here's mine (after New Years):

1. NBC (Deal or No Deal, Chuck, Singing Bee [when it's on], probably 1 Vs. 100 and Celebrity Apprentice)
2. CBS (NUMB3RS, 48 Hours, Cold Case, Power of 10)
3. FOX (Are You Smarter than a 5th Grader?, American Idol and maybe Moment of Truth [when they start]
4. The CW (Smallville)
5. ABC (None)

This is tough, because right now, I'm not watching much on these networks. I'll just have to go by repeats, and the few reality shows I will tune into.

1. FOX - Fifth Grader?, Don't Forget the Lyrics!, Back to You (in March)
2. CBS - Power of 10, Big Bang Theory repeats
3. NBC - possibly Scrubs, Deal or No Deal and Singing Bee occasionally
4. ABC - occasionally Samantha Who?
5. CW - None (as usual)

CBS

and everything else is tied for last at 0 shows apiece.

Fox (I watch some of the animated shows).......I dont watch any of the rest

FOX - Family Guy repeats, The Simpsons, King of The Hill repeats, American Dad repeats
CBS/ABC/NBC/CW - none for now

ABC - America's Funny Videos, Desperate Housewives, Samantha Who, Boston Legal, Lost (when its on), Pushing Daisies, Private Pratice, Ugly Betty, Greys Anatomy, Men In Trees, Womens Murder Club, 20/20
NBC - Chuck, Journeyman, Law & Order SVU, Bionic Woman, My Name Is Earl, & Dateline
CBS - The Big Bang Theory, 2 &1/2 Men, Moonlight, 48 Hours, 60 Minutes
CW - Aliens In America, Reaper, Supernatural, reruns of: Everybody Loves Raymond & The King of Queens
Fox - Prison Break, Back To You and reruns of Frasier

Well I don't watch much network tv right now but I'll do a rank from pre-strike.

1. FOX (The Simpsons, Back to You, Family Guy)
2. CBS (Survivor, Big Brother)

Tied for 3rd:
NBC (Chuck)
ABC (According to Jim)
CW (Life is Wild)

CBS- The Big Bang Theory
CW- Reruns of Reba

CBS survivor--big brother, thats it