This is one of the advantages of having an open device running an open OS. ASUS Eee Transformer Pad is already among the fastest selling Android tablets out there and it is powered by latest Android 3.0 Honeycomb OS. YouTube user lilstevie89 have managed to install and run Ubuntu 11.04's classic GNOME desktop in his ASUS transformer TF101.
ASUS Eee Pad Transformer Running Ubuntu 11.04
Though the video does not provide any instructions on how to install Ubuntu 11.04 in ASUS Eee Pad Transformer, the author does promise another howto video soon on installing the same. You can find more of his videos here.