Here's something I found in my screenshot folder from 2010.05.19 from Plants vs Zombies. It looks like the endless game, using a no cob build, and four freeze shrooms. Fun, but not as sustainable as a cob defense.
I guess its a lot like what I do with Starcraft, but you never even get to go through the motions of 'winning'.
I should see what other old screen shots and records I have from before this blog.