I’ve just discovered that The Secret of Kells is screening in Los Angeles, San Francisco, New York, and other select cities. As Dave Letterman says, I just pray to God your city has been selected! Here’s a U.S. map from IMDb, showing screening locations as of April 4th, 2010. Check your local listings and go see this lovely film!
In Los Angeles, it is currently screening at The Landmark theater on Pico. This is a nice new theater with assigned seating. I personally prefer it over the Arclight in Hollywood, which is much-loved by many, but I find to be a bit of a clusterf**k. For some reason, however, local listings for The Landmark are often unreliable. Best to go directly to The Landmark site for times, tickets, and seat selections.