We're a generation of ungrateful jerks. Time Magazine has established this. Don't play into this stereotype. Don't expect to get a job because you just graduated with a Communications degree and you're under the impression that that makes you special. It doesn't.
Buy a pack of these classic, Gatsby-esque Gold Striped Thank You Cards ($18 for set of 8, Artsy Modern) and send grateful, handwritten thank you notes. Everyone older than you will be impressed. Everyone your age will get pissed at you for "making them look bad." Don't worry about it. They make themselves look bad.