The new millennium has seen its fair share of compelling rivalries: Bush vs. Gore, Jay Z vs. Nas, Swift vs. Perry. Standing toe-to-toe with any of these frenemy pairings, though, are Jim Halpert and Dwight Schrute. The two longtime Dunder-Mifflin officemates were foes from the start, with Dwight resenting Jim’s lackadaisical attitude and Jim being annoyed by Dwight’s very existence. They’d eventually bury the hatchet — Dwight asked Jim to be the bestest mensch in his wedding, after all — but only after nine grueling years of open hostility, cruel words and an endless litany of pranks.

On the 10th anniversary of The Office, let’s take a moment to remember this epic battle of wits, which gave us big laughs over the years and provides great fodder for anyone’s real-life office hijinks. We’re still waiting for the perfect Thursday to trick a colleague into thinking it’s actually Friday.

More Must-Reads From TIME

Contact us at letters@time.com.

Read More From TIME