Moonlighting also crashed and burned when they dragged out the "will they/won't they" schtick (I think it was the first show to do that, too - wasn't it before Remington Steele?). When they had Maddy marry someone she just met on a train, it got beyond ridiculous. I got a little of that same vibe when Beckett started dating that guy this year.
I believe Remington Steele
Which leads me to wonder: given that everything else is being rebooted these days, why is there no Remington Steele
movie in the works?