David Tennant to Star in American TV Pilot

David Tennant, best known to Doctor Who viewers as the current and tenth Doctor in the long running BBC British series has been cast as the title character in an hour-long pilot for NBC in the US called, "Rex Is Not Your Lawyer." 

Having already completed his work playing the lead role as The Doctor in Doctor Who since 2005 after Christopher Eccleston, with his remaining three stories being shown later this year as specials (starting with Waters of Mars on the 15th of this month on BBC), Tennant has already been seen doing American television as the new host for Masterpiece Contemporary (formerly Masterpiece Theater) for PBS.

Last August, NBC green lit the comedic legal drama project after about two years in development. They had been trying to find a lead actor to play the top Chicago litigator who suffers panic attacks and teaches clients to represent themselves when Tennant came along and won the part.

Postscript:

Some additional information - David Tennant's character name is Rex Alexander. It is written by Andrew Leeds and David Lampson. David Semel will direct (he directed the pilot for 'Heroes'). Barry Schindel is executive producer/showrunner, along with executive producers Gail Berman, Lloyd Braun, and Gene Stein. Writers Leeds and Lampson will serve as supervising producers. It is coming from Universal Media Studios and BermanBraun.

Thanks to @mcfangirl