The UFC's lightweight division has a messy history. In spite of this, it has produced two sort-of-dominant champions in Jens Pulver and BJ Penn.
But neither of those title reigns can hold a candle up to the truly legendary title reigns: Frank Shamrock, Tito Ortiz, Chuck Liddell, Anderson Silva, Pat Miletich, Matt Hughes, George St Pierre et al.
If we look outside the UFC, each of the other weight classes also has its own dominant champions.
You have Fedor Emelianenko at heavyweight.
At featherweight you have Jose Aldo with five combined UFC/WEC title defenses. You also have Urijah Faber with four WEC title defenses.
At bantamweight you have Dominick Cruz with five total title defenses in the WEC and UFC. You also have Miguel Torres, the most dominant bantamweight ever.
Every division has had its legendary dominant champions. Every division except for the lightweight division, that is.
With a win against Benson Henderson on Saturday, Frankie "The Answer" Edgar will tie BJ Penn's record of defending the lightweight title three times. Add one more win after that, and Edgar will have four title defenses and will have established himself as the first truly dominant lightweight champion in UFC history.
Undersized champion with the oversized heart becomes the greatest lightweight in MMA history by repeatedly refusing to be beaten.
What's not to love about that?