NELVIN C. CEPEDA / Union-Tribune Father and son – in this case Bruce Jenkins and his son, Cormac – partner up to play the “DC Universe Online” video game.

There's no mortgage meltdown in Metropolis. Building is booming in Gotham. Everywhere you look, development is proceeding at flat-out Batmobile speeds. It's true that all this construction is happening in the fantasy world of DC Comics' new, massive-multiplayer online (MMO) game.

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For a moment, the earth inside the San Diego Convention Center's mammoth Hall H stood still, and then an eruption: “We love you, Keanu!” Keanu Reeves, the dude from “Bill & Ted's Excellent Adventure” and a dude of a different kind from “The Matrix” movies, answered the adoring Comic-Con crowd back: “I love everybody!” There was lots of love, too, for Reeves' new film, “The Day the Earth Stood Still” (opening Dec. 12). It's a “re-imagining” of the scary, Cold War-era, 1951 sci-fi picture directed by the late, eminent Robert Wise.