The worst programming language ever

[Felix Gross]

I really recommend the article by Mateas, Montfort: A Box, Darkly:
Obfuscation, Weird Languages, and Code Aesthetics. In Proceedings of the 6th Digital Arts and Culture Conference, IT University of Copenhagen, 1-3 Dec 2005, pp. 144-153 (google it).

I covers inter alia Brainf***k. Here is a Hello World program in that wonderful language:

++++++++++[>+++++++>++++++++++>+++>+<<<<>++.>+.++
+++++..+++.>++.<<+++++++++++++++.>.+++.------.---
-----.>+.>.

INTERCAL is also entertaining.