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Gp2x Wiz Handheld Game Console [nerd-centric]
This looks pretty incredible..
http://www.gp2xstore.com/Gp2x_Wiz_Handheld_Game_Console_p/158.htm
Like a cross between a PSP and a DS but you can put any games (ROMs) you want on it as well as play official games. Plus, it's an e-book reader and an MP3 player. WANT.