What would a Saturday morning cartoon show look like if done by Matt Groening and Futurama co-author David X. Cohen? It might look something like this: Tonight’s episode presents a long look at Futurama and Friends Saturday Morning Fun Pit, presenting the Futurama characters in a sort of Smurf-ish fantasy world called Purpleberry Pond. And don’t touch that dial, because this Saturday-morning TV spoof includes its own tie-in commercials for super-sugary cereals.