Immigrant Song

It started yesterday afternoon when my wife observed a boat named Valkyrie, which made me think of Led Zeppelin's "Immigrant Song". The song has a repeating, driving guitar riff and the lyrics reference Norse mythology. But the lyrics weren't the spooky part... A few hours later, I get in my car. On the radio, NPR is talking about Led Zeppelin. What a weird coincidence, right? A few hours later, we go to the movies. A coming attraction (for Thor) features "Immigrant Song". Perhaps the Universe is trying to tell me something? Or maybe Led Zeppelin is hot again?