Okay. My favorite is…
> "Tetsu" the Robot Dog
It might be understandable to Westerners. Here are some with English subtitles. Be sure to download them in case if they become offline:
https://www.youtube.com/watch?v=nnB5HTZWR7g
https://www.youtube.com/watch?v=veWynfm_scQ
https://www.youtube.com/watch?v=yGEM1tOc6l4
> "Crazy Live Report MAD" and "Kabi Killer" (or "Mold Killer")
My second favorite is pretty much a tie between "Crazy Live Report MAD" and "Kabi Killer" (or "Mold Killer"), but to break the tie, I'm sure "Crazy Live Report MAD" series is more enjoyable to typical Westerners, because several of them think it's hilarious to hear the hysterical announcer while viewing the extremely tough pro gamer (or cyberathlete) Umehara relaxing while playing.
However, in my opinion, Umehara sometimes scares me because of how much of a pro he is, while "Kabi Killer" is interesting, because it's quite different. A spray bottle full of mold removing liquid? Where can you find something like that being used in MAD videos? Even though I don't enjoy S. C. Johnson products, I find "Kabi Killer" funny. Same to the "Ran Ran Ru" meme, which I also enjoyed, even if I don't eat at McDonald's (though I used to be obsessed with it as a kid).
> "Your seat was gone!"
I mentioned this, only because I've been seeing it often by accident, and wondered what it was. If we decide to build its entry, I will upload the source video on another website.
Anyway, to end this comment, read my other comment in the Yu-Gi-Oh! parent entry.