While I dearly love the consoles of today, the Genesis/SNES era was really the most fun for me in terms of me so anxious to get a game. There was just something about that time, maybe because games were not mainstream yet. I remember the 1st time I played Sonic on the Genesis seeing the bonus level, seeing him underwater getting an air bubble, and his "attitude" and it was one of the most memorable moments of my life.
I remember the 1st time I heard Actraiser's music on my SNES and I thought to myself, this is incredible. There were dozens of moments like that in the 16 bit era...seeing the incredible animation in Flashback, the "fire" effect in Thunderforce III, the pure fun of Mario Kart (The SNES version is STILL the most fun), playing SF2 Turbo @ home with the old milkbone SNES controller, the entire Lunar game was memorable on my Sega CD, seeing Gunstar Heroes the first time, PLAYING Gunstar Heroes the first time, Snatcher on Sega CD with the Justifier, Herzog Zwei, Streets of Rage 2's Grand Upper through a whole level, the list could go on and on.
There are memories like this on the newer consoles but it's not the same. We are at the point where graphics are realistic enough that strides are not mindblowing like it was from the 8-16 bit and 16-32 bit era. Gameplay seems more like a lost art nowadays, though there are still a few companies out there that remember.