I echo the sentiments of other posters regarding bias being relative. It's like the high school English essay: "What is Truth?" - it boils down to perspective.
That said, I tend to believe that BBC, Al Jazeera, Bloomberg, and (help me out with the leading station names) France TV news and German TV news each attempt to show enough perspectives for one to be able to stay well informed with the least amount of bias. As an active consumer of news, one should not rely to a great degree on any single source. Doing so, will undoubtedly lead to an egocentric bias of what is being consumed both actively and passively.
If one is an active and conscious consumer of news, it quickly becomes quite clear which news networks use an abundance of bias in their imagery and presentation (FOX, CNN, MSNBC, CNBC, etc.). Background colors, sound effects/music, editors' picture choices (lighting, angles, timeliness - or lack thereof), choice of leading and closing stories, etc. as well as hosts' emotion filled presentations and body language are are rampantly biased on the major US news programming. Really, make a game of "spot the bias" and the methods they employ become quite obvious.
Research the Yellow Journalism tactics employed in the early 20th century American newspapers, then examine FOX. Talk about history repeating itself...
