I'm always happy to burble on endlessly on any number of subjects I know interesting trivia about. The problem is getting me to stop. ("Oi, shush" usually works, just so you know. XD)

Linguistics is fascinating. Phonetics is like doing logic puzzles with sounds, morphology is the same with bigger clumps of sounds, and don't get me started on how much fun Japanese can be what with three different writing systems and infinite capacity for puns and double- or triple-meanings. (No, seriously, don't get me started or we'll be here all night... 8D)