Geek + Nostalgia = Geekstalgia
1) a digital-technology expert or enthusiast (a term of pride as self-reference, but often used disparagingly by others).
2) a person who has excessive enthusiasm for and some expertise about a specialized subject or activity.
3) a peculiar person, especially one who is perceived to be overly intellectual, unfashionable, or socially awkward.
1) a wistful desire to return in thought or in fact to a former time in one’s life, to one’s home or homeland, or to one’s family and friends; a sentimental yearning for the happiness of a former place or time: