Some things I'm interested in.

Geology. Biology. Paleontology. Astronomy. Astrobiology. Cosmology. Physics - Newtonian, Relativistic, Quantum. Chemistry. Zoology. Botany. Metallurgy. Smithing. Gems. Photography. Drawing. Painting. 3D modeling. Book collecting. Cryptozoology - for fun. Audio science. Music theory. Listening to music. Singing. Lyrics. Poetry. Plays. Prosems. Prose - essays, fiction, nonfiction. Neurology - biological and psychological. Psychology. Psychiatry. Psychiatric "disorders." Consciousness. Symmetry. Order. Emergence. Convergence. Chaos. Complexity. Entropy. Singularities. Neutron stars - pulsars, magnetars. White dwarfs. Extrasolar planets. Philosophy. Knives. Swords. Bows & arrows. Armor. Castles. Horseback riding. Military tactics and strategy. Mythology. Tennis. Baseball. Basketball. Ping pong. Bowling. Pool. Reflexes/response times. Hand-eye coordination. Juggling. Weight training. Coins. Caves. Diving. Hiking. Climbing. Walking. Camping. Nutrition. Meditation. Being at the beach. Oceanography. Volcanoes. Earthquakes. Tsunamis. Asteroid impacts. Comets. Swimming. Cycling. PCs - designing, building, and maintaining. Organization of resources. Systems. Venn diagrams, hierarchy trees and other schematic visual representations. Maps and globes. Travel. Foreign languages. Chicks. Graphic design. Watching movies and documentaries. Reading. Collecting photos. Tolkien's works and "legendarium." Origins of the Bible. Role-playing games. Video games. Cold beer. Cold Coca-cola. Opiates. Lasers. Trance states. Logic. Paradoxes. Artificial intelligence. Cats. History. Good food. Information theory. Quantum computing. Cryptography. Data storage and archiving. Freeware. Preservation - documents, data, wildlife, habitats, everything else. Cows and sheep. Evolution. Dynamic systems. Equilibrium - static or periodic or chaotic. Calligraphy and penmanship. Ink and pigments. Paper, parchment, papyrus. Book binding. Theories/forms of government. Balance. Eastern philosophies. Peace/tranquility/grace. Bliss/happiness. Ecstasy (the feeling not the drug). Infatuation, love, friendship, companionship. Zoos. Ethics. Cruelty prevention. Crime and punishment theory. Reality/truth. Sports cars. Anthropology - cultural and physical, especially paleophysical. Robotics. Human intelligence. Movement. Mathematics. Flashlights. Racquetball, pickleball, squash, handball. Sprinting. Bacteriology and virology. Imaging - MR, CT, X-ray, etc. Anatomy. Discourse. Flirting. Sex. Chivalry. Morality. Listening and observing. User interfaces. Senses. Addiction. Moderation. Abstention. Deprivation. Taxonomy. Schematics. Chess. Go. Cleanliness. Diversity. Beauty. Differences between the sexes. Natural selection. Rhythm/timing. Mass extinctions. Fluid dynamics. Peak performance. Proprioception, cognitive sciences. Skiing. Flying, floating. Dreams. Sleep. Renewal. Hope. Skepticism. Optimism.