Turner Classic Movies (TCM) is bringing one of the most beloved motion pictures of all time – Casablanca – to theaters in 20 cities for free screenings on Tuesday, March 4. Here's the kicker: Only 10 cities have been selected, and TCM wants your help to select the other 10.

So far, screenings are slated for Chicago, Philadelphia, San Francisco, Boston, Atlanta, Detroit, Seattle, Miami, Denver and Washington, D.C. To help choose the other 10, TCM has invited fans to vote for where they'd like to see the movie screened. The Casablanca screening event is just one of many in celebration of TCM's 20th anniversary.

You should hurry over to TCM's 20th anniversary website, tcm.com/20, and cast your vote before the February 10 deadline.