The disdain within the industry for Fox News Channel ought to be enough to prove it, but there are always people like Eric Alterman, the author of What Media Bias? and Steven Rendell, the sub-genius behind FAIR (Fairness & Accuracy in Reporting) that say omission of details of labyrinthine corporate relationships with the TV networks constitutes a bias toward big business. For example, the way a 60 Minutes expose on the tobacco industry was spiked at the behest of CBS lawyers, considering that the then-chairman of the company also owned tobacco giant Lorillard. That kind of stuff may happen every so often, but more pervasive is on-air staff schtuff like CNN's Suzanne Malveaux saying she "hope[s]" the Kerry story dies tomorrow (that is, today).
It probably will Suzanne as people just like you control what is considered to be "news" at present but you had better enjoy it while it lasts as the end is near for that as well!