Kathy Griffin is not for the faint hearted or the easily offended. But she is funny in this foul mouthed tirade about growing up wanting to be a star and never quite making it. She talks about Oprah and does an amazingly accurate impression of Oprah’s daily bellow to her adoring throngs of fans. The many showbiz stories are a lot of fun, they prove that you can claw your way to middle if you really want it bad enough. I think my favorite little bit was when she talked about being complimented by Howard Stern-as in ‘Yeah, I’d do…