Well I just got back from the Seattle 2009 Casual Connect conference. This consisted of three days of sessions about the Casual Game industry, marketing, sales, development, sound and art advice. I also got to meet up with many of my friends from the Indie Gamer Forums.

Some of the games they mentioned that I would recommend are Dino Rush, Corpse Craft, and Plants vs. Zombies.

Popcap showed off a great music video of their Plants vs. Zombies game.
The biggest direction that the casual market appears to be going is toward Social Gaming(Facebook) and more of the iPhone.