"A State Of Arrested Development" is a combination of two FOX shows: the Sonic X dub and Arrested Development. The dialogue from Arrested Development and the animation of Sonic X is remixed into a creation whose storyline is part Sonic X and part Arrested Development.
Episode 8: Bye-Bye To Cosmo
In this episode, per her uncle's orders, Cosmo breaks up with Tails.
Episode 7: http://www.dailymotion.com/Sonic24601/video/xc5en_a-state-of-arrested-development-07
Episode 9: http://www.dailymotion.com/Sonic24601/video/xib8v_a-state-of-arrested-development-09