Dirty Jobs didn’t go straight into a regular series. Like MythBusters, Dirty Jobs filmed and aired a few pilots first and then a full season was ordered. Below is a list of those first pilot episodes:

1 – Bat Cave Scavenger | Originally Aired on November 7, 2003
Visit a cave where bat guano (a.k.a. bat poop) is collected for some of the best fertilizer in the world.

2 – Worm Dung Farmer | Originally Aired on November 14, 2003
Mike Rowe burrows his way onto a farm that specializes in worm dung.

3 – Roadkill Cleaner | Originally Aired on November 21, 2003
Mike rides along with some professional road kill collectors – and takes his turn scooping up five-day-old asphalt ornaments.