YKYOWLOTRW (You know you're obsessed with Lord of the Rings when): you giggle uncontrollably when you encounter a Tolkien reference in a book.
When: you have a shelf devoted to assorted Tolkien works.
When: You dress up as a elf for Halloween.
When: You then insist: "I am and elf! Elves do not get cold!" in response to the -17 temperature.
When: You write a fanfic about a made-up reality show staring lotr characters.