You lost my interest there.
Really? They did put Firefly on the air.
But they also put Roseanne on the air.
What is wrong with you? Roseanne is awesome. Next you'll be knocking Married with Children.
They also put Get A Life and Arrested development on the air.
In fact, Fox is fantastic at giving odd shows a chance on the air. What they are terrible about is axing them before the first season is complete.
edit: I looked it up, Roseanne was on ABC. You lose.
Woops, that sounded more serious than it was supposed to.
I only watch Family Guy and Mythbusters so my opinion on sitcoms is pretty void. XD