Die Walküre (The Valkyrie)

I saw this Wagner opera last night with Dr. P., Tambi, Lizzie, and Emma. The character of Seigmund was played by Plácido Domingo, which made it all that much cooler for me. I was late to the Kennedy Center Opera House, so I missed all of Act 1, but I caught the last two. Overall, the opera was very good. I was very impressed by the cast. I kept hearing Looney Tunes themes in the opera, though, especially in the Valkyries battle cry...