If it's going to be a classic and an original...
Here's a classic nobody has mentioned yet: What's My Line?. (I was going to say Name That Tune, but a daily version might get old quickly - they can't make the range of music too great as nobody knows enough about the different styles from the past few decades, and if they limit it to a specific genre, only those fans would bother watching it.)
Then again, it's probably yet another version of TTTT - and is IGAS still on Oxygen? (IGAS is better in weekly doses with big-name celebrities at the end of each show.)
Original...what hasn't been done yet...
Here's a "sort of original" idea: Spin-Off, but (a) use real dice rolled down a ramp "Let 'Em Roll"-style, and (b) played a little more like Gambit (no "three roll limit", you can reroll more than one die at a time (except that once a couple freezes, the other couple must "set aside" at least one die per roll), and instead of the high dice winning money, make it a straight two-out-of-three, or most games in 20 minutes if there's no straddling).
(I understand there was a TV version of Yahtzee, but I never saw it; how close was what I described to that?)
How about a variation on Friend or Foe with, say, five players in the end game - the catch is, if one person says Foe, that person not only gets all of the money, but it doubles; however, if more than one says Foe, they get nothing and the Friends get it all. (Think about it - you're probably more likely to get nothing with Foe than with Friend, so most players would say Friend, but how many think they would be the only one to say Foe?)
However, if you want a truly original idea, how about a game show based (loosely) on The Settlers of Catan?
-- Don