Talking to Entertainment Weekly, the veteran Star Trek actor explained what he finds intriguing about the mysterious - but often mentioned - Bell:

He has a great sense of his place in the scheme of things. Profoundly successful, very smart.... What's going to be explored is the story of his relationship with [former lab partner Walter Bishop], what he wants with [special agent Olivia Dunham], what he is intending to do with all this money and power that he has, what are his idiosyncrasies. I think we managed to get some interesting touches into the brief scene with Anna [Torv, who plays Olivia]. We're going to have some fun with this guy. I think we're going to ring somebody's bell.... It's a blank canvas, and maybe a misleading blank canvas. Maybe there have been some clues about him that are misleading, and I think that's part of the fun of the show.

On the one hand, Fringe misleading its viewers? I'm shocked and stunned (Okay, maybe not). But I'm not sure about the idea that Bell's going to be an intentionally-misleading "blank canvas," either; wasn't he supposed to bring some real answers when he appeared? I want him to explain all about the war between parallel Earths, dammit!

Leonard Nimoy offers inside details about his role on 'Fringe' [EW.com]

Amongst the spoilers revealed during Thursday night's Fringe appearance at Paleyfest were promises that we'll find out the connection between Massive Dynamics' Nina Sharp and William Bell before the end of this season ("Is she his protector? Is she his accomplice? Is she innocent?" asked Roberto Orci), as well as seeing an unusual meeting between Olivia and Bell ("Where she meets him is the cooler question, but I'm not saying any more," according to Anna Torv, who plays Olivia). The Bishop Family will share a tender moment, and most excitingly, producer Jeff Pinker teased that we'll find out more about the secret past of Peter. Or, perhaps, Peters:

'Is he Peter?' is a good question... 'Is there only one Peter?' I think it's really exciting. We knew the secret of Peter before the season started, and it's been hinted at or sort of laid in in the architecture of the show since the pilot. We start to acknowledge to the audience what that secret is. He, Peter himself, will not learn the secret or one of the secrets at the end of this season, but we will.

More than one Joshua Jackson? Can the world survive that many cocky grins and mumbled line readings? We wait to discover with baited breath.

Fringe stars and producers reveal season-ending secrets [SciFi Wire]