What video always makes you laugh/do you go back and watch often?

I had a pretty terrible day (nothing too serious just some monetary issues I wasn't anticipating) so I left work and when I got home decided to watch YouTube to see if I could make myself laugh a bit to try to shake off the day I'm feeling much better after watching a few videos and realized the two that always seem to put me in a good mood from Smosh are "Wake not Father lest he accost ye (Don't wake Daddy)" and "Everyone is Spider-man." Just was curious what videos everyone else watches whan thay want to laugh?