LnC fans who want to give Smallville a go should at least skim seasons 4-6 (I have a list all prepared, if anyone wants it of which episodes to watch. Just PM me!)
I took you up on your offer.
I saw some bits of Apocalypse on YouTube and it seemed worthy watching. There must be some good things that I'm missing. I started in season 8 and totally skipped over the Lana-arc-from-hell.