Dark Stripes...no need to take cheap shots. In fact, other than liking the show I agree completely with you.
Yes there are two different sides of Ozzy...TV Ozzy and Radio Ozzy. Let me tell you why I don't like TV Ozzy.
The simple reason that it makes him look like a fool and that's the image that everyone gets from him. Take for example The Osbournes Reloaded...watch it again and you'll see that it was acting on his part. That's not who he really is. And who knows if that's what he did during the original Osbourne show. But if it gets high ratings and a laugh from the audience, that's all that matters right?
And yea when it comes to Ozzy, he does take music seriously and that's why I love him. Hell even when he started his solo career, he took a gamble on Randy Rhoads just after hearing him tune his guitar, then paid for the recording sessions out of his own pocket. He's a musical genius. He knows what he wants and he goes for it.

I didn't watch The Osbournes past season 1, and I don't plan to see The Osbournes Reloaded ever again. But I will continue to listen to his music, buy his new albums and spend hundreds of dollars to see him play live. Why? Because he is still my God.