YES, I AM AWARE THAT BULGARIA WAS NOT IN THE SOVIET UNION. IT'S A RUNNING GAG WITH A FEW FRIENDS.
this pack allows you to keep the niceness of the default pack, with a Soviet Kick!
See this video
http://www.youtube.com/watch?v=1QWVdGfm0Ro

To install, get the zip file, and put it in the texture pack folder.
Then, download THIS FILE and find ur minecraft.jar file (in .minecraft > bin) open it with WinRar
go to 'lang' and replace the en_US.lang file with that file
More features soon!

Changelog
v1.0.1 - Available here
-Fixed an small artistic error on signs.

v1.0 - Available here
-Initial release
-Pigs have bulgarian flag 'brand' on them
-Signs are backed with bulgarian flag
-Grey wool is replaced by bulgarian wool
-Bulgarian Pumpkins
-Bulgarian Jack o' lanterns
-Bulgarian Paintings