What are some good apps (and games) for a Samsung Galaxy 10-inch Android Tablet?

I’m mostly interested in either games or apps that involve reading, but I want apps that are also free and graphically pleasing. I feel like I don’t know what to do with my tablet, I’ve got the basic stuff (sudoku, angry birds, google reader), I just want to take full advantage of the tablet and feel I am missing something. Please let me have your suggestions!