Interview source

According to this interview with Milo Ventimiglia (Peter), it seems he has trouble when is around multiple heroes, like taking on two powers at once overwhelms him. Could be an interesting way to limit his abilities.

Not much else in the article, but thought that was worth passing on.

Your link didn't work. It kind of killed my computer for a minute. Is the article somewhere else maybe? I'd like to read it.

the link works fine for me, but here's the article:

Nonthing new, we have read this before:

In a recent interview with Sci Fi Wire, Milo Ventimiglia, who plays Peter Petrelli in NBC's Heroes, talked about the show and his character's ability.

"There's a physical pressure that Peter feels if he were in the room with two superheroes," Ventimiglia said. "The physical, the mental overwhelming that it could possibly get him into, we do get into that. We do explore it. And also, is he ever going to retain [it], or is it just when he's nearby somebody?"

"We all play our parts," he said. "And per the pilot, I think the storyline that was easiest served was the Petrelli brothers. But all these other characters unfold in interesting ways, and that's also what is part and parcel and integral to the show."