Three optical illusion videos by greenpro2009. The author states that no camera tricks or special effects were used.
Notes by greenpro2009:
I love to bring you videos that: a) Make your brain hurt b) Make you laugh c) Freak you the hell out!
I’ve seen this image a couple of times already on the web. It is ridiculous the length of the t-shirt! 
Link via Tumblr
I love this art installation by Ran Hwang. It looks like it is some type of paint matter, but in reality it is made of buttons and pins on panel.
An amazing work of art at a skate park in Lugano, Switzerland. The waves and octopus feet were painted by graf artists Never Crew.
Notes about Never Crew (from bio):
The Never Crew was founded in late 1996 by Pablo Togni (29 september 1979) and Christian Rebecchi (20 december 1980 with the intent to deal primarily with graffiti and graphics (but, give the different attitudes and interest of its members, it ranges from the start in other areas such as: painting, sculpture, design, video, illustration, comics, photography,…). In 1999, join [to] the group Mimmo Mendicino (07 september 1982) and Andrea Arosio (30 april 1981).
Layered Worlds 3013 views per day 
Phantom Bike 2226 views per day 
Where's the Ball? 1726 views per day 
Is this really a sculpture? 1652 views per day 
Paint on canvas, paper, and why not on books? 1344 views per day 
The Cookie Waffle Piano 1334 views per day 
Is this really a drawing? 1231 views per day 
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