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Season 1 - Aug. 24, 2001
Season 2 - Jun. 13, 2003
Season 3 - Jun. 11, 2004
Season 4 - Feb. 25, 2005
Season 5 - Jul. 29, 2005
Season 6 - Jan. 06, 2006
Season 7 - Jun. 06, 2006

The Grim Adventures of Billy and Mandy Season 3 Episode 3
HD
Overview:
After spilling salt in a restaurant, and not throwing salt over his left shoulder, Billy starts having an unusual amount of extremely bad luck. The next day, Grim analyzes Billy and finds out he has a “Catastrophe Snail” attached to his brain, which is causing him the bad luck.