Cast updates: Arrow stuck in Smallville

With all the recent departures from the CW's Smallville, including actors Michael Rosenbaum (Lex Luthor) and Kristin Kreuk (Lana Lang) and cocreators Al Gough and Miles Millar, the show's producers had a lot of thinking to do to determine how to keep the eighth season interesting for fans.

One of things they apparently came up with is a whole lot more Green Arrow. Actor Justin Hartley has signed on as a series regular for the upcoming (and likely final) season of Smallville, reports E! Online, and will reprise his once-recurring role of Oliver Queen and his arrow-slinging alter ego. However, the next season will be paying more attention to Queen's life, focusing on his backstory and superhero origins.

As for those who don't want to see Kreuk go (there are some of you out there, right?), E! also says she'll return for a bit as expected and may even turn up in as many as seven episodes.

Actor Billy Zane, best known for his villainous role in Titanic and his even more villainous (at least to most men) role as Kelly Brook's one-time real-life boyfriend, is joining the ABC drama Finnegan. Zane will play a deputy D.A. in the LAPD who works with the show's titular detective, played by Teri Polo, according to The Hollywood Reporter.

Former Jericho actress Sprague Grayden is parlaying her run on the cult CBS show into two new jobs. Grayden, who played Heather Lisinski on Jericho, will play the president's daughter in the upcoming season of 24 and a wife who wants to see her husband go straight in FX's motorcycle-happy Sons of Anarchy.

Elsewhere, easy ridin' Dennis Hopper has joined Starz's Crash, Andre Braugher (Homicide: Life on the Street) has joined Ray Romano's Men of a Certain Age, and Jenna Elfman (Dharma & Greg) is reportedly making a guest appearance on a future episode of My Name is Earl, says E! Online.

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