Have you ever owned a console that wasn't from Nintendo/Sega/Sony/MS (and if so, what was it and how was it?)

[curl-6]

Have you ever owned a gaming console that was not from one of the "big 4" (Nintendo, Sega, Sony, and Microsoft) and if you have, which one(s) and what was it like? Was it a good console? What did you like/dislike about it?