Cubieboard is mini pc development board, which is based on Allwinner A10 SoC, small size (10x6cm), hacker friendly, extendable and very low-cost. Compare with Raspberry Pi, it has higher performance, SATA supported and 96 extended interface.
If you plan to assemble a small computer, you can try using this small ARM platform cubieboard. It supports Ubuntu and other Linux distributions; you could use it like an ordinary computer operation. At the same time, the platform also supports Android 4.0 Ice Cream Sandwich system and has bulit-in IR sensor, can be used as "Android TV".