Woweee you guys.. I cannot compete with you, but this is what I have..
Some kind of NES TV plugin console
Nokia N-Gage (I don't care what anyone says, it rocked)
Nintendo DS (got on launch day!)
Xbox 360 (launch day version - RROD - replaced with Slim)
PC (Core i7 etc)
Original XBOX (launch day again - still going strong!)
that's it for now!
Edit: Almost forgot about the Wii sitting downstairs! (garbage)