Another MUST, a well tailored pea coat (or its double breasted counterpart) never goes out of style and can be worn for any occasion. Choose a neutral color like the blues or the grey's if you already have a black coat.
Invest in a knitted sweater or cardigan. Sure it can make you look older, wiser, and give you more credibility...whats wrong with that? And don't forget, quality is much better than quantity, therefore invest in good quality fabrics such a cashmere, and merinos and virgin wools. Sure, it is more pricey, but they will last you more than just one season; think investment pieces.
Essential! Sneakers are fine, but boots are better as they are more versatile...think combat-military meets chic-dressy for a night out, a casual encounter or shovelling snow in -15 degrees outside.
Now men, go shopping!
(source: ssense.com, revolveclothing.com, gap.com, gq.com, saksfifthavenue.com)