I finished Peggle Extreme and played through the Xbox 360 demo for Peggle Nights last night. And that was enough. I won't be buying any Peggle games any time soon.
I played some more Call of Cthulhu: Dark Corners of the Earth. What really irritates me with this game is that the autosaves don't work very well. If I die and choose resume, most of the time it just loads the save in the first save slot. When I start the game after turning on the console and choose resume, it always loads from the first save slot. Perhaps it's a problem with the Xbox 360's emulation. I'll find out when I replay it on my original Xbox.