As if the ER series finale was not must-see TV already...

Michael Ausiello reports that former Gilmore Girls star Alexis Bledel has signed on for her first major TV role in two years. The actress will appear in ER's two-hour farewell installment on April 2.

Bledel will play a new intern named Julia Wise in the episode, which chronicles a 24-hour shift at County General.

As fans should already know, George Clooney and Julianne Margulies reprise their roles of Doug Ross and Carol Hathaway, respectively, on March 12.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.