from day 1, I can't remember as single one that was compelling and where aerial views of the stadium/crowd weren't embarrassing. On the other hand the SEC championship game has been a big success from day one.
The B12 championship game was also a success, as is the B1G championship game. The Pac12 game is a flop, last year Stanford with an excellent team on their home field didn't even come close to selling out a relatively small stadium.