Yeah, at first, I was a little disappointed, but the last four or five episodes have been awesome. Spade's been himself and seems to be having fun doing it. The jokes have been dead-on funny. And best of all, he's brought back his Hollywood Minute (though it's now called Hollywood Ending, but still just as funny). There are still some bits that still bomb, but overall, 8/10, could be 10/10 if it just was a little more biting.
Behind South Park and the Daily Show, it's probably the best show on Comedy Central. I like Colbert, but nobody can beat Spade at the top of his game.