Weng Weng (b. 1957 - d. 1992) was a Filipino actor and martial artist, mostly known for being the shortest adult action hero.

He starred in action movies and pulpy exploitation comedies during the seventies and through the eighties. Films starring Weng Weng include 'Da Best in da West', 'The Cute... the Sexy n' the Tiny', 'The Impossible Kid', 'Agent 00', 'D'Wild Wild Weng', 'Agent 00' and the appropriately titled 'For Y'ur Height Only'.

His recognition around the world grew in April 2007 with the release of the Weng Weng Rap video by The Chuds and John R of R Room.

Here's a 2003 boingboing post on the genre. 

And yeah - there's even a Weng Weng fanclub.