BeagleBone Black is a low-cost, community-supported development platform for developers and hobbyists. Boot Linux in under 10 seconds and get started on development in less than 5 minutes with just a single USB cable. Checkout this little guy at beagleboard.org.
Specifications
Processor: AM335x 1GHz ARM® Cortex-A8
512MB DDR3 RAM
4GB 8-bit eMMC on-board flash storage
3D graphics accelerator
NEON floating-point accelerator
2x PRU 32-bit microcontrollers
Software Compatibility
Debian
Android
Ubuntu
Connectivity
USB client for power & communications
USB host
Ethernet
HDMI
2x 46 pin headers