I'm fairly quiet but definitely get excited about a variety of things (often in and around my hobbies) and am eager to share them with people. I don't consider myself too fancy or picky, and have been taken to be notoriously uncritical of movies (I can usually find an enjoyable aspect to any film!) but it's more like I don't define myself by what I don't like (for example, I'm not the kind of person to make smalltalk about how such-and-such movie sucked and try to define my tastes in that way.)
I'm not particularly socially adventurous but I'm no stranger to meeting new people or doing new things.
I tend to finish things that I've started. I have lots of long terms projects and do my best to keep making progress on them. I've got a positive outlook on life. I enjoy my nerdy hobbies and while I don't necessarily broadcast them to the world, I definitely do not keep them in the closet. I may not be the leader of the group, or the one keeping the topics of conversation coming, but I'll always be there to at the very least try to get in a few quips now and again.
I like soda, mexican food, and internet memes. I love to discuss and philosophize and listen to other people do the same. I can easily get interested in topics and I enjoy listening to opinions and taking my time to mindfully figure out and respond with my own.