Inspiring and Intense Soviet Space Propaganda Posters.

http://io9.com/inspiring-and-intense...ers-1213553199

That wasn't pretty cool.

http://thugkitchen.com/

Found this searching "most delicious fucking cooking", I meant cookies but didn't initially realise my mistake.

http://mises.org/books/

More of an archive than a website

lots and lots of books on Civilization, economy, society, investment, and anarchy . Enjoy

Archive.org's Internet Arcade:
https://archive.org/details/internetarcade

900 arcade games from the 70s-90s emulated in your browser.

In a similar vein...
 

That's awesome.

http://www.watchthisthing.com/

Weird, wonderful, and obscure videos.

Interstellar interactive wormhole simulator:

https://sirxemic.github.io/Interstellar/

MP3 and MP4 compression: What happens if you collect the info discarded by the compression and play that back without the compressed info?
http://theghostinthemp3.com/

I'm a year late to this, but that's fucking WIN.

Oh that is fucking awesome - shades of William Gibson / Jeff Noon all over the place.

Pixie

Music genre word salad holy shit it's all clickable

http://everynoise.com/engenremap.html

(found by Laserman)

points subtracted for not being html5

that's awesome

more points off for listing kiwi bands under australian music