Interesting question. I wouldn't say significantly, though there has obviously been influence since probably the 40s. Off the top of my drunken head, words such as dude, guy, burger, gas (as in petrol) have entered the lexicon. Even the occasional spelling such as "drive-thru" makes the odd appearance.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'