YOU KNOW YOU'RE OBSESSED WITH HEROES WHEN:
You're wearing a ball cap in a dark room and you can't stop thinking about Sylar.
Anywhere there's dust you draw the symbol.
You constantly speak in Heroes, even if by accident. Example: you're really angry and you yell: "You're not listening to me!" and then realize you're quoting Heroes and you lighten up
You're walking through the mall and you see the (even fake ones) samurai swords and freak out because they're exactly like Hiro's! Then you proceed to act out the ending scene of the season 1 finale, you starring as Hiro with the sword of course, and using your sibling as Sylar
When you can't sleep instead of counting sheep you watch the battles from Heroes in your head.
You're over at your friend's house on a Monday night and your sister calls you, but the side of the conversation that your friend hears is, "Omigosh, is she ok? What happened? Ohh... Who Niki? What?! Oh, Claire. Well I knew that would happen!" after you hang up your friend looks worried: "What happened?!" "Oh, nothing, it's a TV show."
You FREAK OUT when you discover your best friends don't watch Heroes.
You spend hours trying to convince said friends to watch Heroes.
Your friends start yelling "Yatta!" when they win card games (and they're the ones who don't watch Heroes)
Your friends (still the ones who don't watch Heroes) start saying Save the cheerleader, save the world.
Your friends (now thinking about watching Heroes) know all of the plots, subplots, battles in detail, and characters and powers of each
And once again your friends (maybe going to watch Heroes) recognize the symbol and start drawing it when doodleing
Your dirty car is literally covered in the symbol, taglines, and anything else you could think of from Heroes (Including the word Heroes written across the side, complete with eclipse on the O and mondays on nbc) and you don't want to wash it off
Every time you go to Six Flags you yell "Yatta!!!!!!!!!!" when you get to the top of a roller coaster.
Instead of motioning at slitting your throat at someone (saying "you're dead-meat"), you slit across your forehead.
You see a cockroach on the floor and you start looking out for Sylar

Your mom asks you if you got the list (referring to the grocery list) and you are confused for a moment - how would I have The List?
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Please add your own, too! "The list" could go on forever!