Nothing is happening right now. The phrase originated during World War I in reference to the major site of trench warfare. A: "Have you heard back from any of the schools you applied to yet?" B: "Nope. All quiet on the Western Front."
A usually low-budget cowboy film set in the American West but filmed in a European country, especially Italy. A: "What kind of movie do you want to watch tonight?" B: "How about a spaghetti western?"