Cool tutorial series from Lifehacker on mastering your uber-functional DSLR cameras. You might find these quite useful if you have one. Click on the image to start reading.

An interesting math problem: how to turning a sphere inside out. It comes out not so easy. via Scientific American.

Thorough, step-by-step video tutorials on recipes of tasty things, sorted by degree of difficulty. Below is the one on how to make Rudolf’s Christmas Cookies for the holidays, follow this link for more.

Easy-to-do trick with paperclips to impress your friends.

Jared Gordon, once posted here @ haha.nu with his clip of 100 voices impersonated, has made another one with another 100 characters. Amazing. Watch also the guys behind Mario, Looney Tunes and movie trailers.