Fun theory

Although an ad campaign I believe in Fun Theory.

Stop motion

The technique this is made with is called stop motion (photography in this case). You can also listen more Oren Lavie.

Improvs

Improvs can make you smile; read more about them at Improv Everywhere.

Unexpected

Even though it was a commercial I think it was a really smiley one. Read more in saihttam 1988 posting in YouTube.

Curiosity

Unfortunately this video is in YouTube as so many versions that I couldn't trace the original version. But the cat is so adorable I have to put the video here.

Ads in bags

Ads in bags are sometimes fun. More of these you can find on Shopping Journal.

Street art

Fun street art by Julian Beever

Interpretations

See more of these translations on Klaatu42's Talking Animals Channel.

Sleep buddies

This is not Simon's Cat but dharms7. You do the comparison.

Summer

Don't know much hungarian, but the video is by Népszigeti Kutyasuli, which seems to be some kind of dog school.

Farts

As far as I know this is originally from the tv-show AFV (America's Funniest Videos). If you can't stand paid laughter, turn the voice off.

Cute puppies

More of these you can find at Giggling cavaliers. This video is one of Saija Lepistö's vimeos.