True, there's many classics. If I had to pick one ok maybe two then, that for me define gaming it would be pacman + yars revenge, great back in the day and still great to play today (there's a secret in simplicity, ok the hardware was basic!). Of the modern era... Call of Duty (I know I hate that franchise!) but it did something no other franchise did and that's bring console online multiplayer to millions, other games had gone there before of course and more after, but nothing did on the scale of the Cod franchise from cod4-mw3. Now think of all the great games in between pacman and MW3!!!
Btw does anyone remember the best game on the 3do console, Killing Time? Bioshock I'm looking at your ancestor there!!