One day for fun, I was watching something on Iraq and switched between the three main news channels to see the difference. Something along the following lines were what they were saying about the same event:
MSNBC: The war in Iraq is getting out of control. Just today, 3 more soldiers died in the war tha Bush got us into. There are still no wmd's found and Congressional hearings are going on to get to the bottom of this travesty!
FoxNews: Three soldiers were killed by extremist terrorists today in a blatent act of terriorism. The war in Iraq is still being found by our men and women of the Armed Forces who are searching for the wmd's that are still being hidden in Iraq. Democrats again had frequent outbursts in the Congressional hearings.
CNN: Three soldiers were killed in Iraq in a car bomb. No one has claimed responsibility yet. On the Hill, Congressional hearings started on their (something) day with both Republicans and Democrats talking to so and so.
Anytime I've done this (switch between the three stations), it always seems MSNBC=left, FoxNews=right, CNN=more facts than the other two. Of course, if they are having their news shows hosted by people, then it depends on the person, but just for news it always seems that they are pretty much on those lines.