SMK-Link has introduced a new docking stand for the iPad which essentially turned the iPad into a desktop. The PadDock 10 or VP3650 Ver. 2 allows you to not only use it as a desk top, but also adds speakers, has full 360 degree rotational ability and a really cool option, tilting. The PadDock 10 has two speakers built into the stand and is currently only compatible with the iPad2.
Obviously a bluetooth keyboard would need to be used for input with this setup, but it is an interesting bit of hardware. The PadDock 10 runs at $99.99 USD and is available from the SMK-Link website at: