Even though some critics look down upon the term "intertextuality" as some tend to use it, quoting:
"simply use it as a stylish way of talking about allusion and influence” 
I love the notion that ones understanding of texts, music, paintings or any other form of beauty and brilliance being transformed by other forms of beauty and brilliance. I watched Goodfellas yesterday and was overwhelmed with joy when I spotted two great allusions to my favorite film of all time, Taxi Driver. I will not mention those references explicitly here and leave the pleasure to those who love Scorsese and/or De Niro. Instead I will post two of the most beautiful parts from these great movies...
First one is from Taxi Driver, and in my humble opinion is one of the greatest depictions of adoration of beauty in movie history. I might be biased, as Cybill Shepherd was my childhood idol in Moonlightning.
The second one is the climax of Goodfellas, for those who didn't watch it I'd suggest just watching the first 2 minutes.
Scorsese is a master of setting the speed of the film. The scenes when Ray Liotta's under cocaine influence are so fast that you get an idea of being on a cocaine kick (I never tried cocaine, to avoid misinterpretations) , the scenes leading and following the Lufthansa heist which you watched previously are also shot in such a tempo, that one is relieved to watch the events and the tension unwind one by one.
Irwin, William. ''Against Intertextuality''. Philosophy and Literature, v28, Number 2, October 2004, pp. 227-242.
Yes I am a geek.