If we?re talking mostly quick-paced and action-packed games, I would have to concur with ?Far Cry 3?, the new ?Tomb Raider?, the ?BioShock?-series, and the ?S.T.A.L.K.E.R.?-series. At a stretch ?The Witcher 2? and ?The Elder Scrolls V: Skyrim?. I myself is a fan of the ?Dead Space?-games, as they have that gritty science fiction quality that, for example, the ?Mass Effect?-series lack (although those are very good as well).
To mention something not on this list that is very first-person shooter, the first thing that springs to mind, is ?Metro 2033?. Play that with Russian dialogue and English subtitles (if you are not Russian or Ukrainian, of course). I would imagine that the follow-up ?Metro: Last Light? released later this week will only have polished its meritorious qualities. You should also consider ?Mafia II?, as it is a wonderful amalgamation of racing and third-person shooter with a very engaging story, as was its precursor.
That?s all I could think of to write at the top of my head.