It's pretty sweet when rappers draw from a larger cultural vocabulary and are able to make that connection with listeners. One of my favorite songs "Make My" is a great example.
Gotta love this line that recognizes C.R.E.A.M by Wu-Tang:
just call it cream, cause when it rises to the top
you get the finer things"
"If there's a heaven, I can't find the stairway"
Here it is with the lyrics for you:
'Sleep' is another one of my favorites and lyrically beautiful. The first line alone references Alfred Hitchcock's 'To Catch a Thief'. Check ittt.