Why do you say videogames can never be compared to films and other forms of artistic expression? I'm no Mike Thomsen, but the interactive nature of "videogames" as a medium has potential for greater things than what it's being used for right now.
I'll try to keep it short and non-ranty, but imagine a game like Call of Duty where the run and gun action is restrained and the emphasis is placed on situations where you see the horrors and reality of war played out more. I don't see why it can't have the same effect as watching a film like "Saving Private Ryan".
The quality of visuals, sound effects, voice acting, and presentation certainly has reached a point where audiences are willing to suspend disbelief more so than in the past.
The CoD series tried to do this which is what set it apart from other shooters at first, but eventually the developers went for the more mainstream approach giving players lots of guns and faceless enemies to blow apart. It's admittedly fun, but doesn't progress the interactive entertainment medium.
Ramba_Ral: Games as art is a very laughable idea. The only game that I had played that ever went to a level comparable to other forms of narration was GTA IV. Still, it was how the game treated the characters and made them human, to me in my opinion. Nevertheless, I wouldn't call GTA IV art in years just say it was close to a good sense of film narration.
There are different types of movies just as there are games. GTA IV would be more like a cool action movie with some dark humor thrown in. Kind of like a Guy Ritchie or Quentin Tarantino film. Characters in Tarantino's films were never really "human" either but they fit into the setting.