S9, E11 - "Absolute Justice"
Ooh, absolute Justice. That's a fun set of episodes.
Without the help of The Blur, Green Arrow, and J'onn Jones (

HE'S BACK!!) it's possible they wouldn't have made it.
I love that we got to see a brief flash of his true form. That was awesome!
When Dean Cain guest starred on the show (in S7?), he played character with a similar curse. Born in the age of cavemen was cursed to be immortal and watch all those he loves die as he lived on. This is an actual DC canon character (villain, whose name I've forgotten)
The character's name is Vandal Savage. And yes, he was in S7. Episode 4 Cure.
I don't like Lois's new source, Agent Walker, was it?
It's Waller.
One of the little moments in the double episode that I love that wasn't mentioned is the expression on Chloe's face when she sees the outdated computer at the JSA headquaters. That was an amusing little moment. :p