#6 Bret Hart (654 days)
The best there is, the best there was and the best there ever will be.
That's not just a name on a t-shirt or a slogan that you can say every so often; it's the truth. Bret Hart made every single thing that he did in the ring look effortless, and his overall work as a performer rightfully earned him a number of WWE title reigns over the course of his career.
In a way, it's a shame that we never got to see what The Hitman would've been like when matched up against some of the newer stars that came into the fold when he left. That being said, he still managed to average 131 days per each of his five runs with the belt, so good old Bret must have been doing something right all these years.
We move from a man you've definitely heard of to one that we aren't so sure about.