The full all-Sparks Earth Day show from April 22, 2013. Starring Marc Evan Jackson as Sparks Nevada, Marshal on Mars, and Mark Gagliardi as his faithful Martian companion Croach the Tracker. Also starring WorkJuice Players Busy Philipps, Craig Cackowski, Autumn Reeser, Annie Savage, Hal Lublin, Paul F. Tompkins, and Paget Brewster. With special guests Tom Lenk, Shannon Woodward, Bill Corbett, Natalie Morales, Mark McConville, Jeremy Carter, and Adam Busch.

Songs by Eban Schletter. Music performed by Eban Schletter with Sara Watkins and Sean Watkins.

Written by Ben Acker & Ben Blacker with guest writers Bill Corbett and Douglas Petrie.

Directed by Aaron Ginsburg.