How many episodes are there in this season of the American animated television series that had the episode "Peeps?"
Peeps (Regular Show): "Peeps" is the fourth episode of second season in "Regular Show" for originally aired on January 17, 2011 for Cartoon Network. Regular Show (season 2):  The season was 28 episodes long, starting with "Ello Gov'nor", and ending with the season finale "Karaoke Video".
28