The Playstation. It was actually my fourth console but it was the one that made me care about games. It was a revelation for me. My favorite console ever, with several of my favorite games ever.
Suikoden I & II, Final Fantasy Tactics, Final Fantasy 7, 8, & 9, Gran Turismo 1 & 2, Alundra, Legacy of Kain, Tekken 3, Silent Hill, Twisted Metal ... damn, those were good times.