I'd put Wikipedia's batting average up against CBS, the Boston Globe or the New York Times, any day of the week ending in a "y".
Also, Wikipedia is self correcting, for the most part. I find a good test for any encyclopedia is the Sacco and Vanzetti case. I personally am convinced that they were justly convicted after a fair trial. I find Wikipedia's treatment far more evenhanded than the dead tree Britannica, or any other dead tree encyclopedia I've ever consulted.