For me Tetris always helps restore the faith, but in the vein of more recent years, well...
Off the top of my head, Gone Home, Demon's Souls, Bioshock, Gunpoint, and any good fighting game with local multiplayer functionality. Seriously, those couches become memory lanes of high-octane, flashback-riddled fragments of blood, sweat, and leftover lingerie once you really dive into it.