The only good WP7 apps that exist are:
2. Apps that do not require vertical list scrolling
List scrolling is so bad, that I think WP7 devices should come with Epilepsy warnings. That’s how bad it is.
Lists stall, jump, you end up selecting items you never wanted to select, etc.
Also, the horizontal scrolling needs a threshold to trigger pane switches. If you tap up to scroll up a bit in a list and your finger moves from side to side, it can trigger horizontal pane switches and in some applications that means you lose your place in a list. That’s terrible.