Reason #812 that American Idol is actually terrible as a put-together television broadcast

"Hi, we've got the cast of Glee here! We're not going to mention it until super-late in the show, but we will position them so that they're in the backgrounds of shots early and often. That way, you'll be squinting past the judges and interviews to see if that's really them -- which, again, we won't confirm until the very end. So, you know, feel free to focus your attention on that distraction instead of the, what's it called? Oh, yeah: the show."