James Wolk James Wolk

Can you imagine Lone Star's James Wolk or Battlestar Galactica's Katee Sackhoff under the Hawaii Five-0 sun, playing an old CIA buddy of McGarrett's? It could happen. A new casting notice says the CBS drama is looking to add a series regular to tentatively debut in the 17th episode of the season, TVGuide.com has learned.

According to the official casting call, the character will be somewhere in his or her late 20s to early 30s, a wise-cracking, multilingual Asia expert recruited into the CIA right out of Harvard. The new addition also has a deep-rooted connection to McGarrett (Alex O'Loughlin), having taken a bullet for him years ago. And it's still there, lodged next to the spine.

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So who would you cast in the role? Would Lost alum Evangeline Lily or House guest star Amber Tamblyn be the best choice to help Grace Park mix up the boys' club? Or should CBS grant a new chance to recently unemployed actors like Outlaw's Jesse Bradford, Undercovers' Boris Kodjoe or Rubicon's James Badge Dale?

Share your thoughts and your suggestions in the comments below!

Hawaii Five-0 airs Mondays at 10/9c on CBS.