I disagree completely. Though I liked Burton's Batman films as a child, I find them unwatchable now. All of the characters are horridly portrayed, and at the best of times I end up laughing for all of the wrong reasons. He didn't do as bad a job as Joel, but he doesn't even come close to the job that Nolan did with Batman Begins.
Anywho, Clooney was the worst, but I'm plenty hesitant to blame him for it. He knew it was a crappy movie and simply didn't care as a result, thus deciding to play Batman gay. I'm even hesitant to totally blame Schumacher as much of the crap in Batman & Robin was forced on him by the producers/studio, and he at least admits it was a terrible movie for all the same reasons fans hate it. As such, of the serious Batman portrayals I'll go with Val Kilmer with Michael Keaton coming a very close second.