The Office - Season 8 - Paul Lieberstein talks Catherine Tate

"We may start to see some of Andy's anger problems come back, but in a way that may really benefit him," Lieberstein says.

Lieberstein also says Andy will get at least slightly more comfortable around Robert, but both guys will have to deal with a new element: Nelly Bertrum (Catherine Tate), who will return in February as a special projects manager for Sabre.

"Her character is one that grasps very strongly onto something without a lot of thought and runs with it," Lieberstein says. "She doesn't have a lot of skills, but she has a lot of drive."

Nelly will bring several people from Scranton, including Dwight (Rainn Wilson), to Florida to help with the launch of the Sabre Store, the company's badly planned and executed version of the Apple Store.

If that sounds like a bad idea to you, you and Lieberstein are on the same page. "[Nelly] follows it through with equally bad management," he says. "We play that out as an arc -- they're down there for about six episodes. Then late in the season, Catherine Tate will come back up to Scranton."

One thing that won't be a major thing when the season picks up Thursday (Jan. 12)? The birth of Pam (Jenna Fischer) and Jim's (John Krasinski) second child. Fischer has returned from her real-life maternity leave, Lieberstein says, but the show won't make a big deal about the new baby.

"People don't care so much," Lieberstein says with a laugh. "The rest of the office does not seem as moved by the addition of a baby. [Pam] comes back with very little fanfare."

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