Nice post. I loved reading the Re-Animator and another brilliant short story about a cannibal, can't remember the name unfortunately.
I've got "Dagon: And Other Macabre Tales by H P Lovecraft" which i still haven't read so this is a nice reminder.
I don't find it funny, pretty pointless actually. Then again, i'm not gonna start a whole thread based on my negative opinion of...an internet video.
You don't like it, just don't watch it. His video from lectures last week was hilarious.
I would say a Gem is a very unique handling of a little-known trick. Or even a self created trick.
These would be very personal to you and only you would perform them.