Batman: The Animated Series
Also, I think he said that because it's not Deus Ex, because AS WE ALL KNOW, Deus Ex IS the ONLY true video game, and ANYONE who enjoys any others (aside from System Shock and Bethesda games) deserves to spend an eternity in hell playing Big Rigs Over The Road Racing.
Spoiler My sarcasm machine ran out of batteries

OT, I also think batman is the best superhero, mainly because he's a human and because he acts like one. He has almost been killed and has almost killed people before. Also, he wasn't born with these abilities, he trained extensively and bought some things and then got to where he is now.
Not Bethesda games, just Fallout: New Vegas.

But really, I do very much like Batman Begins and The Dark Knight, but every other Batman movie I've seen was just incredibly bad. I enjoyed the Animated Series as a kid, but I've been trying to watch that again lately and I didn't think much of that either, though Mark Hamill's voice acting is still fantastic.
And I haven't played Arkham City, but despite all the praise it gets I found Arkham Asylum a complete waste of my time. Everything looked fantastic but the gameplay bored me to death with its simplicity. Jumping on a gargoyle makes you completely invisible for some reason, and every time I push a button something awesome had to happen. Seriously, it felt like playing Dragon Age II but without the repetitive environments. And the story wasn't nearly interesting enough to make up for that. I tried to finish it to see what all the fuss was about, but I couldn't bring myself to get much further than the fight with Bane. Maybe Arkham City is better.
