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Comic-Con Thursday - 'Tron Legacy,' Stallone, Whedon, Abrams and more

The first full day of San Diego Comic-Con is in the books. It featured panels with stars like Sylvester Stallone, Bruce Willis and Angelina Jolie.

Stallone was there to promote his August action film, "The Expendables," on a panel that also featured co-stars Dolph Lundgren, "Stone Cold" Steven Austin, Randy "The Natural" Couture, Terry Crews, and a special brief appearance by Bruce Willis. Willis was on a panel earlier to promote his new film RED, more in the action-comedy mold.

The biggest film of the day, and possibly of the entire convention, was "Tron Legacy." Fans everywhere wore "Flynn's Arcade" and "Flynn Lives" T-shirts, and it had the largest number of fans pre-registered on the Comic-Con scheduling site. They showed eight minutes of footage from the film at the convention; a full trailer is included below.

Other films looking to seize some Comic-Con buzz included today's "Salt," "Battle: Los Angeles," and August's "Scott Pilgrim Vs. The World."

One fascinating panel in Hall H Thursday not related to a particular film was Entertainment Weekly's The Visionaries panel, featuring Joss Whedon (Buffy the Vampire Slayer, Dollhouse) and J.J. Abrams (Lost, Alias). They talked about past and upcoming projects, and had some points of contention, with J.J. making the anti-3-D film argument and Joss taking the pro side, as well as disagreeing on whether someone should go to film school. Still, Whedon praised Abrams effusively and argued that Abrams' "Star Trek" set the gold standard for modern moviemaking.

Comics were sure not to be left out, though, with DC and Marvel both kicking off their own panels. Various levels of star gave out autographs in Hall H. I had the chance to meet a personal favorite character actor, Mr. Stephen Tobolowsky, who's appeared in movies like "Groundhog Day" and television shows like "Glee" and "Heroes." You also had panels a bit more off the beaten path, like the Dr. Horrible mass sing-along with thousands of fans singing along with the cult hit musical, or "Superhero Kung Fu Extravaganza," where professor Ric Meyers offered a wry look at some of the best and worst in kung fu film.