Hmmmm...most obsessive behaviour?
For me, and judging by the majority of this forum!, it has to be collecting Shameless and Arrow DVD's to the point of OCD levels of correctness!
Immaculate slipcases, perfect HD picture with the correct amount of parsecs
, crisp ear soothing sound and pushing yourself to the point of bankruptcy to ensure you get your next yellow or white fix!
We may not suit the sheeples (what I call the general public) tastes but we Shamelessers / Arrowers know what we like and will do whatever we need to to get the next disc!