Well actually I do, it's great to have an alternative voice and hopefully this will bring more understanding and humanity to the news.
Unfortunately, the simple fact of having an "alternative voice" does nothing to further understanding or humanity. To be directly beneficial, you must have something worthwhile to add with that voice, and it should be clear of bias and misdirection. As I understand it, Al-Jazeera is as biased and controversial as both the left- and right- leaning institutions already in place, and I fail to see how an additional news network adds anything beneficial to the conversation. Simply having another viewpoint isn't fundamentally more (or less) useful simply because it is different.
Whether or not Al-Jazeera is going to be beneficial remains to be seen - but more is not always better (or worse), and different is not always good (or bad).