Netherlandish artist who painted Christian horror until his death in 1516 AD.
There is an "official" website, and a project with high resolution scans, the Bosch project. But in my opinion, the best way to enjoy Bosch is through the Bosch Bot, which posts small cutouts of random parts of Bosch's paintings.
Great Art Explained did a 50 minute video
His surviving works can mostly be found in Prado Museum in Madrid.
Personally I find his work disturbing to look at, and yet I feel compelled to keep looking.