“Who Wants to Be a Millionaire” host Regis Philbin has responded to “Jepoardy!” host Alex Trebek’s criticism of his game show. (It was reported yesterday that Trebek said “Millionaire” asked easy questions along the lines of “What’s the usual color of Post-its?”) USA Today quotes Reege as offering up this challenge to Trebek: “Once and for all, I think it is time to show America how much you know. We’ll take you out to dinner. We’ll have some laughs. And then we’ll put you in the hot seat, and we’ll see if you know the color of Post-its.” Perhaps Trebek could put his money where his mouth is and ask to participate in the planned celebrity episode of “Millionaire.”