We're still not sure when NBC's '30 Rock' will return to our screens (fingers crossed for early midseason), but when it comes back, expect an extra injection of hilarity from Mary Steenburgen.

According to EW, Steenburgen will guest-star as Charlotte, the "highly spirited and attractive" mother of Elizabeth Banks' character, Avery.

In her multi-episode arc, expect to see WASP-ish Charlotte going head to head with Jack (Alec Baldwin).

Hit the jump for more casting news.

The other day was actor James Roday's birthday; on April 4, he turned 32. For the Texas born star of Psych, life is quite nice right now. Psych is coming back for a third season on USA this summer, and starting the other night, episodes from season two will be showcased on NBC. Oh, and he's dating Maggie Lawson, a.k.a. O'Hara, his co-star on the show.

There's a fine line between charming and obnoxious, amusing and annoying, cute and cloying, funny and trying too hard. James Roday veers close to the line. He's a daredevil of a comic actor, daring to be almost too much to take. But like other actors of his ilk, he succeeds in flying close to the sun, but never burning his wings. Like Jim Carrey or Robin Williams, James Roday is willing to push the comic envelope. So far, he's proved to me that watching him is always interesting, arresting and fun. While he may never reach the box office glory of Carrey or cop an Oscar like Williams, he's definitely going to be a TV star for today, tomorrow and down the road.
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