Ivan went through it in class and show us his example.
Since finding this out, I've got back into my previous post and highlighted some of it in blue (the parts which were most important and not just me explaining what we did).
Below is a video, I took, briefly of Ivan showing us what type of things we should write.
In the video it mentions that the rock-drill shares resemblance to the driod figure from Star-wars. Although I concur that they do look similar, I believe that this intertextuality was not done purposely.
Battle Droid (1999)

Rock-drill (1913)

If it wasn't done intentionally, as I believe (and there is no evidence) then this would be called unconscious intertextuality. This would imply that the battle droid wasn't intended to show any resemblance. However, there could be a chance that it was subconsciously made, in which the creator of the battle droid had seen the Rock-drill previously.
Concious intertextuality would be making remakes of films like Willy Wonka and the Chocolate Factory to Charlie and the Chocolate Factory.

A quote I do like though, is "The fundamental concept of intertextuality is that no text, much as it might like to appear so, is original". Although this may have been possible very early on.
Another example of concious intertextuality would be Harry Potter the film. It started off as a successful book and others consciously used intertextuality to make film from it. Similarly to the video games they created after. This could almost be seen as an Echo of the story.
Intertextuality doesn't have to be a whole film, but instead can be just a small joke used in the film relating to anther film. It wouldn't even have to be a film, it could be anything.
Reminds me of the Kanye West incident in 2009 whereby he went up on stage whilst Taylor Swift was on there and said the following "Imma let you finish, but Beyonce had one of the best videos of all time!! One of the best videos of all time!
Since then many people have been making memes of that incident in different scenarios.

In fact, a large amount of internet memes come from intertextuality. (I think I'm on a roll).
Sources
http://culttvman.com/main/wp-content/uploads/2010/06/crdroid01.jpg
http://www.tate.org.uk/collection/T/T00/T00340_8.jpg
http://ia.media-imdb.com/images/M/MV5BNjcxMjg1Njg2NF5BMl5BanBnXkFtZTcwMjQ4NzMzMw@@._V1._SY317_CR0,0,214,317_.jpg
http://www.popcrunch.com/wp-content/uploads/2009/09/Kanye-West-Imma-Let-You-Finish.jpg





