Thought about it after my dad was demanding why I wasn't aware of tv shows, stars and movies I wasn't alive to watch when they were new like Deliverance and the Fonz...
Never drew anything regarding it, but I seen Godfather references in at least 3 different Disney-produced children's shows (...though they all meld together since all of them run on sibling rivalry and zany schemes) usually a rendition of Vito Corleone. Though in one cartoon, they did the "dead horse in bed" bit with a bush chopped in the image of a giraffe.
Which... baffles me a little. While Disney shows are pretty lousy, if an adult snerks at a joke but the child doesn't, and then the child asks why it is funny, what's an adult supposed to say?
I've seen a lot of crime show parodies in kids' shows too. But it's Godfather references that confuse me the most since the movie is rated R (then again, 1970s rated-R seems to be tamer than current rated-R). CSI is TV-14... still not kids stuff, but I'm pretty damn sure I've seen PG-13 stuff before turning 13 just based on the action movies I know I've seen as a little girl. @_@
Though the Sesame Street Law & Order and CSI parodies are flipping hilarious (Disney's mentions of the Godfather aren't particularly funny even if you know what they're referring to). I'm not sure if any of my toddler cousins even got it... though my baby cousin doesn't seem to find Neil Patrick Harris as the shoe fairy as interesting than I do.
Then again, my baby cousin will glue himself to any TV if you turn on something sci-fi and assure him it's Avatar. He apparently will watch Revenge of the Sith.
Though the watching The Godfather part is untrue (actually, I've only watched like half of it), my sister did remark "NOW THE RIDE MAKES SENSE" or something to that effect after watching Jurassic Park...
My sister's never seen all of Star Wars either, but she's found "I'm your father" jokes funny... though it might be that everyone makes them and now it's just a stupid thing to blurt out.
Actually, I'm never sure how much you should follow the ratings on movies. I don't think my parents have ever cared very hard about what we were watching as long as we didn't intend to use it as inspiration to go shoot somebody and it isn't porno.