We thought we had intestinal fortitude with our 30 Burgers/30Scoops/30 Sandwiches series, but we're more impressed by Colin Hagendorf, who set out to try every pizza sold by the slice in Manhattan. The 28-year-old Brooklyn resident, who was recently profiled in the Wall Street Journal, has sampled 362 slice joints during his two-and-a-half-year quest.

It was a massive undertaking, so Hagendorf had to set some parameters:

He narrowed his focus to Manhattan and set simple rules: only order plain cheese pizza; only eat at places selling individual slices; and no going back after canvassing an area to catch newly opened establishments.

While Los Angeles experiences its own explosion of pizzerias, we've got a long way to go to before there's a slice pizza joint in every neighborhood.

[Our own pizza photo gallery after the jump.]

Hagendorf reviews all the slices on his blog, Slice Harvester, and rates them on an eight-slice scale. Only one, Pizza Suprema near Penn Station, has earned a perfect score.

Elina Shatkin is a staff writer at LA Weekly. Follow her at @elinashatkin or contact her at eshatkin@laweekly.com.

Advertising disclosure: We may receive compensation for some of the links in our stories. Thank you for supporting LA Weekly and our advertisers.