He began his career on Little House on the Prairie and later appeared on Friends and Two and a Half Men, but he's never had a starring role on a television series. That's about to change.
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Penn is starring with Natascha McElhone on the upcoming Beau Willimon (House of Cards) drama about the colonization of Mars. We know there is water there and bacterial presence, so why not accept it can support other life -- like ours?
If it's on Hulu and with this cast and creator, we're counting on something spectacular. Everything we know about The First (which is very little) can be found below.
Does it look like something that might interest you?
1. Sean Penn and Natascha McElhone - The First Sean Penn