I guess I can add a few.
Most of my experiences have been along the lines listed here (IE., no Scooby-Doo, smurfs have a special 'become possessed' stage of manufacturing or something, modern music evil, etc.)
Couple other fun tips:
1) When shopping for antique furniture, avoid high-boys. They are a favorite for demons to possess.
2) Don't try meditation or any kind of mind relaxing techniques. When you're conscious mind 'drifts off' like those techniques suggest, you are actually causing a part of your brain to become empty, and a demon will be sure to inhabit that spot! (News from the platform, no less! - there were even a few articles about it, IIRC)
3) ALL SCI-FI IS EVIL!!! The Genesis account details EVERY LAST THING god made, and aliens are NOT listed - hence, they don't exist. Watching programs that show otherwise is promoting evolution, and thus something no JW in good standing should be allowed to do (the CO whose pet peeve this was actually suggested that because it was such a glossy refined package, it was almost certainly the direct handiwork of 'Satan' to lure 'Christians' away!).
Xander F
(Unseen Apostate Directorate of North America - Ohio order)A fanatic is one who, upon losing sight of his goals, redoubles his efforts.
--George Santayana