Hey Ben,
I thought I'd challenge you to make a Raspberry Pi smartphone.
Here are some min. specs:
[REQUIRED] Raspberry Pi Model AB (start with Model B, take off 1 USB, Ethernet, composite, and audio jack)
4" (diagonal) ISP LCD touchscreen
[REQUIRED] A sleek case with a Macbook-like Raspberry Pi logo on the back (it lights up when your PiPhone is on)
Android 4.0
Some more required stuff:
Buttons
Sensors
WiFi
Yep, it's called PiPhone.