Drawn! passes on the report that Joe Barbera died yesterday.
Hanna-Barbera made many of my least favorite cartoons and many of my favorites as well. A lot of that was timing. The studio put out a lot of low-budget fare, and although story was their emphasis (as opposed to Disney cartoons, which emphasized character) the stories were often very formulaic. But there was also a wildness to a lot of their best work that made some H-B cartoons very fun for a kid to watch.
John Kricfalusi wrote of the best critiques I have read about a Hanna-Barbera cartoon. It's about the painting of the backgrounds in Yogi Bear cartoons. Read it here.