My limited experience is that its pretty average news. I find the BBC (or the CBC in Canada) to be considerably better with respect to seeming unbiased.. Al Jazeera kinda feels CNN-ish. I'm curious if anyone with more exposure feels the same? Also, CNN is still king for truly up to the minute breaking news.
I certainly think having a counter balance to Fox and CNN's right of center, wouldn't hurt, and I think people should be allowed to watch what they want. However, I'd be more inclined to petition to US government to mandate the BBC be broadcast for free.