Devoted and creative, “Community” obsessives assemble mashup videos, Tumblr blogs and collect other ephemera featuring memorable quotes, in-jokes and fiction all their own.

“You see that people are as invested in the show as you are and that they are obsessing over the little details like we are,” Jacobs beamed, “and all the little things that we put in the show that we hope people will notice, they pick up immediately.”

McHale’s favorite, he said, are the videos dedicated to the fleeting romance between his character and Brie’s Annie — and the videos that set the show’s opening credits to music from “Battlestar Galactica.”

“Our fan base is mighty, thank God, and I think most of them are young, because no one appointment views the show, and I feel like, if they figure out a way to measure that and keep it all together, then our ratings might go up,” he said. “But thank God the fans love the show. Hopefully it will keep us on the air, we’ll see. I think if we get through this third season, we’ll be okay — oh, who the hell knows.”