Yo Gabba Gabba! - Seasons (4)

Season 1 (Number of Episodes - 20)
Aug 20, 2007
Season 2 (Number of Episodes - 20)
Sep 22, 2008
Season 3 (Number of Episodes - 15)
Mar 8, 2010
Season 4 (Number of Episodes - 14)
Dec 18, 2011