One of the “stars” in a early 60’s film promoting growth and funding for Florida’s college system is a pre-Doors Jim Morrison. The archived clip mercifully shows mostly the Morrison part, saving us from having to view the entire film to find him.
Frank Zappa did cover versions of Sunshine of Your Love and Stairway to Heaven. This surprising news is from The Covers Project, where you can look up songs or groups and see what they did that other people did.
Like lots of music reference sites, this is neither complete or correct, but it’s a good start.
Another useful site is AdTunes.com, where I found what is, and who did, the Mitsubishi ad that goes “yeah yeah yeah yeah yehyehyehyehyehyehyeh YEAH!”?. The answer (which I should have know) is it’s “Uncontrollable Urge” by Devo.