1. You wish you could have just used the 'wait' function whilst watching Transformers 2.
2. You have accumulated a stockpile of weapons, ammuntions, clean water and food just in case.
3. Your hobbies outside of Fallout 3 include watching the Road Warrior and, uh, sleeping from time to time.
4. You dream about in-game women.
5. You try to use VATS when urinating.
6. You try to use VATS in any other situation at all.
7. You make a sales pitch to the Coca-Cola corporation suggesting that they put a mild isotope in their soft drinks in order to give them an extra kick.
8. You bought copies of the game for PC, 360, and PS3, just to see if there were any differences.
9. In the hypothetical situation of no. 8, you play all three simultaneously.
10. You write fanfiction on the forums.
11. You pick fights with hardcoe Fallout 1 fans, just to be annoying, and because you have allready discussed Fallout 3 to death with its community.
12. You have more than five characters.
13. You tried playing through the whole game wearing sixy Sleepwear.
14. You taped a picture of Amata to your PIPBoy.
15. You've written essays on the discrepancies between Vault-Boy and Pip-Boy.
Keep 'em coming!