The Pachelbel Rant is indeed inspired. I doubt that all the performers mentioned as "quoting" the Canon were even aware of the plagiarism: if Green Day, for example, know who Pachelbel is, I'll eat your lunch.Have you ever seen the "Pachelbel Rant" on iTunes? Not only is it hilarious, but it does an AMAZING job of finding the Pachelbel chord progression in almost everything!
Since I didn't see it mentioned, I'll add that heavy metal visionaries Spinal Tap quoted Boccherini's "Minuet" just prior to the end of "Heavy Duty Rock and Roll." It was done with the taste and finesse we expect from the band, so you might hardly have noticed it.