(By DCist contributor Hemal Jhaveri) You loved him in Rushmore and now you can ask him whatever obscure little question you want. Of course, there’s no guarantee he’ll answer. Actor Jason Schwartzman, and director David O. Russell (Three Kings) will be online today at 12 noon for a chat on Washingtonpost.com. Schwartzman and Russell are out promoting their new movie, the existential comedy I (Heart) Huckabees, which also stars Jude Law, Dustin Hoffman, Lily Tomlin,…