Talk about obsessions. The best description of the addictive nature of the television show "Lost" I've heard yet, comes from Professor Richard A. Muller in his online course "Physics for Future Presidents" at U.C. Berkeley. He has a 10 minute Q&A at the beginning and someone asked him what he thought of "Lost". Without hesitation he said, "It is a colossal waste of time....and, I can't stop watching it"
I've been hooked since the minute I heard the "Life and Death" theme by Michael Giacchino, embedded in the middle of this YouTube Vid.