By far, the most popular Harry Potter clips came from Neil Cicierega whose Potter Puppet Pals series videos have been viewed millions of times. Most notably, his musical episode titled "The Mysterious Ticking Noise" tops our list with over 100 million views. (We only included one video per fan in our list, but you can view the rest of Cicierega's series here.)
We didn't include trailers, but in case you were wondering, the most-viewed trailer were for the first part of The Deathly Hallows.
There are quite a few different styles -- and levels of production value -- we've seen even at the top, with videos dating back to the start of YouTube 6 years ago.
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We've also seen a slew of impressive Potter parodies and fan videos popping up in just the last few weeks. We'll have a round of the top trending ones tomorrow.