Weird Al is probably currently the best-known parodist of long-time longevity. He made his mark in the early 80s and continues even now. This blog item is mostly about his parodies that capture music from one song and integrates lyrics and visuals of his vision from another song. Viewing and listening to such music videos can be somewhat discombobulating. You might be pulled in two directions of what to pay attention to, especially if you are familiar with both cultural aspects you see and hear. The following links take you to Al's mostly dual-theme music videos.
"The Saga Begins"
Music from "American Pie", visuals & lyrical creations from Star Wars
"Money For Nothing/Beverly Hillbillies"
Music from "Money for Nothing", visuals & lyrical creations from Beverly Hillbillies
Music from "Mickey", visuals & lyrical creations from I Love Lucy (with closing bars of the I Love Lucy theme song)
Music from "MacArther Park", visuals & lyrical creations from Jurassic Park (with guest appearance by Barney the dinosaur)
Music from "Lola", visuals & lyrical creations from Star Wars (videos created by Al fans)
http://www.youtube.com/watch?v=xMpDHEVaI1k (added feature—Legos)
Weird Al himself performs the song at http://www.youtube.com/watch?v=LxaFhHCMMuc.
"Bedrock Anthem" and "Spy Hard" have slightly different flavors of dual themes than the aforementioned songs.
Per http://en.wikipedia.org/wiki/Bedrock_Anthem, this song is a "parody of 'Under the Bridge' and 'Give It Away' both by the Red Hot Chili Peppers". Visuals & lyrical creations are mostly from Flintstones cartoons.
Combination of title Die Hard and James Bond features (introductory credits with implicitly-nude women silhouettes, similarity to theme songs from Goldfinger and Thunderball)
Medic-Al—At one time, I had planned to write a separate blog item regarding Al and medical-theme songs, however, I have encountered only three blatant ones thus far. Although this article is about dual themes, I hope my inclusion of these video references (which I ran across while rooting around for dual themes) manage to tickle your funnybone.
"Living With a Hernia" (parody of James Brown's "Living in America")
http://www.youtube.com/watch?v=X8Ow1nlafOg&ob=av2n ("Living with a Hernia")
http://www.youtube.com/watch?v=oHqUipinDyw ("Living in America")
"Like a Surgeon" (parody of Madonna's "Like a Surgeon")
http://www.youtube.com/watch?v=notKtAgfwDA&feature=fvst ("Like a Surgeon")—note reference to the Three Stooges starting about 0:10.
http://www.youtube.com/watch?v=s__rX_WL100&ob=av2n ("Like a Virgin")
"Pancreas" (Al creation that sounds like a combination of Beach Boys' "God Only Knows" and "Wouldn't It Be Nice"; visuals & lyrical creations pertain to the pancreas.)