Any and all "Dragons' Den" look-back features must start with Holy Crap, the greatest success in the show's Canadian history. Midway through season five, Brian and Corin Mullins, an unassuming husband and wife team from B.C., brought their breakfast cereal to the Den. The name was an instant hit, but Dragon Jim Treliving said it best upon tasting a sample: "Holy crap, is this ever good?!" The Boston Pizza mogul bought into the all natural cereal maker, and immediately business boomed. The Mullins reported a stack of orders poured in within hours of the airing of the episode. The company founders had forecast $600,000 in sales in the year following their appearance on the show, but Holy Crap ended up pulling in a staggering $5 million. Today, it's available in more than 600 stores across the country.