How does Heroes stand out from other popular shows on TV? Zachary Quinto - who was mostly absent from last night's season two premiere - says that his series focuses on broad, important issu

"It's not just that people like to talk about our show, it's the themes of the show," Quinto said. "The show is about saving the world. The show is about people waking up to their own power to make a difference.

"It's not like the entire world is talking about the sex scene in the shower at the hospital with the doctors, or the lawyers in the bathroom, or whatever."

"There always is going to be pressure, no matter whether it's the first, second, third, fourth or fifth season," Ventimiglia said.

"I think you have to strive to better yourself and better your characters. But this show always is going to be a big one to make. So I think, if anything, it reminds us not to slow down and not to slack off, to do better and to grow."

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.