No particular order:

Dreamcast (for all the wierd & wonderful stuff Sega did)

Xbox (think thats heavy? Try lifting a Sega Mega CD console!)

Original Game Boy (my first console!)

Game Boy Advance SP (for making consoles actually portable)

Amiga 1200 (not a console I know, but is still dear to me, along with Amiga 500 as well)

Virtual Boy (great games, even if it does induce headaches...)

Neo Geo Pocket Color (great playability)

Sega Mega Drive/Genesis (again, great playability)

Bandai SwanCrystal (quirky Japanese gaming, excellent)

Amiga 500 (machine that gave me Colonization, Civilization, Chaos Engine, SWOS, Flashback, Monkey Island, Beneath a Steel Sky, Stunt Car Racer, Indianapolis 500, Lemmings, Bump n Burn, Railroad Tycoon, Skidmarks, Cannon Fodder, etc, etc, etc. My first serious games machine!)

Ah.....getting all nostalgic now. Think I might dig some of these out over the weekend and give them a try again, good memories!