Seeing that the iPhone client was out for the game I decided to give this game a try. Warning, this game is very captivating (Read: addicting) and if encountered should be left alone until you have ample time to play it. Warning!
Well here's a screenshot of one of my battles. I was playing around with the corn cannon, very fun. Highly recommend this game, I think they have an online version of this too but it's a limited version.
The online version of this game is at popcap but I'm pretty sure you've heard about this game already.
Some more screenshots of the game for your viewing pleasure