Personality wise. Classic INTJ - so that is either good or bad depending on your perspective. But it means I am very driven and value self-discipline. I am also very introverted - probably a bad thing and not very good at subtle nuances. I usually say the wrong thing or make terrible social observations. Therefore, I prefer directness. I tend to form strong relationships with a few people rather than have lots of friends. I try not to take myself too seriously unless I have to. Been described as eccentric. I do my utmost to help anyone in my inner circle if they have problems, and quite protective. I have a strong code and stick to it. Oh! I am Lawful Neutral.
Science! I like sciency type things and would be very interested to meet people who would like to talk to me about such things (as a lay person). I have an interest in most things - although my mathematics falls rather short of permitting a complete discussion. Nonetheless, I do enjoy concepts, principles and ideas. Astronomy fascinates me and I do enjoy zoology, palaeontology, geology, and other 'Earth Sciences'. But, I am not trained in these things and it's more a passing interest than an active pursuit.
Classics! Well, I think, like all people who study classics, this naturally leads to a wide range of sociological, literary, historical interests that go beyond the period (stuff I won't address for fear of making this too long). I do have a particular interest in the historical aspect of Roman history. However, you can generally capture my interest immediately with anything classics related.
That might all seem a little stuffy (I have a tendency to downplay those interests). I do have a soft spot for crosswords, board games, and other puzzle type activities. Mythology, RPG, fantasy type stuff is awesome. In that vein, also video games tend to interest me. Something with good story appeals. Slightly surgically sewn to the internet. I usually use it while working or not so much working. I enjoy eating out and all the smaller pleasantries of life. I also enjoy pleasantly wandering around the hills of Christchurch. No doubt there is more to me, but I think this is a good starting point.
After they have processed that information (for better or worse). I will assume they take stock of first impressions. I am quiet and reserved, and probably quite unassuming. I tend to be a little awkward around people and it takes me some time to find my voice - so to speak. I usually lose this over the longer term, and if the meeting is important I can turn on my more assertive side. So social context plays a role. I think I tend to dress smartly, and probably have some air of professionalism. I do try.
TV shows are a little more memorable. Star Trek, Firefly, GoT (yeah), Futurama, Walking Dead, American Horror Story, Red Dwarf, Monty Python, Blackadder, I Claudius....
Not sure I will fill out the next 4 categories mainly because they would be frightfully dull.