Normally, we're used to seeing the Magic Mike side of Channing Tatum, and no one's complaining. But it's easy to forget that he's also a good guy. While promoting his passion project at Comic-Con, a solo superhero flick about Gambit, the 21 Jump Street star rushed to help veteran nerd hero, Stan Lee off the stage after taking an awesome selfie. Panel 10 - Hall H, @20thCenturyFoxPanel - I mean this HAS to be some kind of damn record. Most superheroes in one selfie? Casts of Wolverine, X-Men, Dea…