The first KISS line was the first figures from McFarlane that I picked up, that got me started.
I bought them to ward off a very religious boss I had at the time, as the Gene was great for that with the Serpent on the staff.
I grabbed the second set, and left it as that once I changed jobs.
I came across Series 17 in a Spencers one day, and that kicked off the habit royally! Had to get that line, and then worked my way back to all that I was ale to get ahold of.
I think I am sitting at 95% of having each version of every Spawn figure.
MM and Movies I collect as they appeal.