I actually recommend skipping most of Smallville's fourth and fifth seasons, even the second half of season three. The show completely floundered when they had no idea what to do with Lana if she wasn't going to be Clark's eternal crush.

Getting further off topic but season 5 began the upswing, IIRC.

I love the 2 hour JUSTICE SOCIETY episode on Smallville.

The way Season 2 of FLASH has unspooled, I have been disappointed with none enity of Jay Garrick.
I was hoping to see Jay and some of JSA co-heroes in action on Earth-2.

I think that has disappointed a lot of fans. After introducing a lame, depowered Jay Garrick, we learn he's a homicidal maniac.