Here’s a very funny video, called “Digital Media Musical Chairs,” from a Wall Street type who goes by the codename L. McDuff.

(He also did “Mad Avenue Blues” and two years of “Wall Street Meltdown,” which is also embedded below.)

It’s about the many switcheroos in recent years among the execs at the big Web outfits like Google (GOOG), Time Warner (TWX) unit AOL, Yahoo (YHOO) and Microsoft (MSFT).

And when you look at it from a “Hollywood Squares” point of view–oh, how I desperately miss Paul Lynde–it’s kind of is amazing to realize that there are only about a dozen Internet execs moving in and out of the various jobs.

Some of the faces in the video include Greg Coleman (Yahoo/AOL), Sheryl Sandberg (Google/Facebook), Tim Armstrong (Google/AOL) and Joanne Bradford (Microsoft/Yahoo). It’s a wonder the video leaves out Scott Moore (Microsoft/Yahoo/Microsoft).

Here are the videos:

Digital Media Musical Chairs:

Mad Avenue Blues:

Wall Street Meltdown:

Wall Street Meltdown–Redux: