No matter what your role, marketing and sales are part of your day to day job. "Purple Cow" explains why we (and our organizations) need to be remarkable and "Free Prize Inside" tells you how to achieve it.
I also recommend "The Big Moo" and "Small is the New Big"
I have not read "All Marketer's are Liars" yet but it's on my list.
I also recommend "The Tipping Point" and "Blink", they give a good understanding of how ideas and behavior spread and how impressions/conclusions are formulated.