Volume on TV/CD player etc - anything with numbers - has to be on a number divisible by 5.
CD/DVD/Books has been in order, the series in alphabetical order then chronilogical. For example. James Bond, all 22 films together but have to be Dr. No, From Russia With Love, Goldfinger, Thunderball, You Only Live Twice, On Her Majesty's Secret Service, Diamonds are Forever, Live and Let Die, The Man With The Golden Gun, The Spy Who Loved Me, Moonraker, For Your Eyes Only, Octopussy, A View To A Kill, The Living Daylights, License to Kill, GoldenEye, Tomorrow Never Dies, The World Is Not Enough, Die Another Day, Casino Royle, Quamtum of Solace.
Food stacked in the fridge in best before date order.
Things on selfs (best example is pot noodles) have be in a symmetrical pattern (my mates had fun with this one on holiday, kept moving them see how long it would take me to notice)
When drinking from a can, once finished I have to pull the ring pull off, put it in my mouth and then put it in the can.
Check the alarm 3 times before I go to bed.
Left shoe first, then right shoe, then do up left shoe, then right shoe.
Although less OCD and more so hygiene. Have to have a shower before leaving the house if i've had wank.
All items in the wardrobe hung facing the same way.
Can only sleep on my side, facing out the bed at night.
Probably a few more hidden somewhere.
Oh, and when I mentioned the James Bond films and the word order - I have to type them all out in order - Dr. No, From Russia With Love, Goldfinger, Thunderball, You Only Live Twice, On Her Majesty's Secret Service, Diamonds are Forever, Live and Let Die, The Man With The Golden Gun, The Spy Who Loved Me, Moonraker, For Your Eyes Only, Octopussy, A View To A Kill, The Living Daylights, License to Kill, GoldenEye, Tomorrow Never Dies, The World Is Not Enough, Die Another Day, Casino Royle, Quamtum of Solace