SEO Rapper about Page Rank:
https://youtube.com/watch?v=fnSJBpB_OKQ
SEO Rapper about Link Building:
https://youtube.com/watch?v=qC3UNewnA5g
SEO Rapper about PPC:
https://youtube.com/watch?v=c96LTLlaXew
Just found this on YouTube, there is a lot more on YT.