I found this while searching for information on whether Thanos will be the primary villain in an upcoming Marvel movie. This has potential.
http://www.cinemablend.com/new/Josh-Brolin-Joins-George-Clooney-Coen-Brothers-Hail-Caesar-43445.html (http://www.cinemablend.com/new/Josh-Brolin-Joins-George-Clooney-Coen-Brothers-Hail-Caesar-43445.html)
Also a TV movie by the Coens that sounds a bit Lebowski'eske.
A Brother Shamus.
Harve Karbo.
http://www.imdb.com/title/tt2078632/?ref_=nm_flmg_prd_2 (http://www.imdb.com/title/tt2078632/?ref_=nm_flmg_prd_2)
Quote
Follows surly private detective Harve Karbo as he delves into the seedy side of Hollywood high society and hangs out with his ne'er-do-well pals in El Segundo, Calif.
Wouldn't it be cool if there were some appearances of the "Seedy" Lebowski characters?