Bill Murray, left, Dan Aykroyd and Harold Ramis (and Ernie Hudson! Don't forget Ernie Hudson!) turned paranormal investigation and elimination into big-time '80s capitalist bucks. They also buried half of Midtown Manhattan under a fine coating of supernatural marshmallow in the process.
Typical villain: Ancient Sumerian gods.
Abilities: Unlicensed nuclear "proton packs" and hi-tech "traps" to catch ectoplasm. They also have a great ability to ad-lib one-liners.
Longevity: Two hit movies and 140 half-hour animated episodes. A spinoff series had 40 episodes. A third movie from the writers of " The Office" is in the works.