The Objective’s Objection - A nice story that reminds us all that if you want to be a mind controller you need to be smart and careful or it may backfire.
Oblivious - The problem with being in a reality that's been changed is you really DON'T see it.  This is a fun story of just such an occasion.
Obsession (HB5211) - A very nice little story about a man that decides to corrupt a girl he wants and then her partner and some other people and... ;)
Of Pavlovs and Pavlovas - Oh the problems of overly brainwashing your toys.
The Offer (br0adband) - I'm not huge into hypnosis stories, I prefer MC preferably with an evil side.  But there is so much thought that went into this that if it isn't the authors fantasy, he's DAMN good at writing(and probably an amazing hypnotist)
Office Daze - Important rule, never piss off your co-workers.
Office Down the Hall - Not bad, just a little light brainwashing of a co-worker
Office Interview — Replacing June - I'm pretty sure there's no replacing that secretary, but she did a heck of a job trying.
Office Referral - Not as good as "Talked Me Into It" But a very good story.
Officer Lauren, Police Slut - Officer, meet MCer, Officer fuck everyone.  Any questions?
Oh Romeo Where the Heck Are You - Nice story, but was never continued.
Oh, Damn - Sometimes a little temptation is just too much.  Sometimes it's MUCH too much.
Okay - Cute little story about a MC watch and a guy that tries to convince a girl that it really is a MC device.
Ole Time Curios - Some stories jump straight to the sex, others build up slowly.  This one built very beautifully.  Well done Buster
On the Beach... Sorta - A nice little seduction where the body goes the mind will follow.
On the Train - I think more than one person's fantasies came true on that train.
Once Every Four Years - Hmm, something definitely needs to be learned here.  Poor girl.
One Bite - Nicely written, I like how the MCer played with her.  Odd, the name on MCStories is One Bit but the story name is One Bite in the http.
One Hot Summer — Redux - Was dubious about this one, but it's a good story, the mantras worked for me :)
One Little Pill - Those pills sound DANGEROUS, and exactly what a few of my friends need :)
One Night In Bangkok - Sometimes you need to trust your instincts.
One of These Nights - Ahh, yes, sleep, when we are all most vulnerable.
One Thousand Fifty Dollars - Not bad, but as the examiner said, a bit predictable.
One Year at a Time - Nicely done, even with the ad at the end.
Online - An online conversation gets out of control, very enjoyable.
The Online Misadventures of GoodGuyGrey - Remember boys and girls, make sure that your hypnotic scripts only do what you actually want.  Nicely done and I don't usually like chat stories.
Only One Wish - An interesting way to play out a wish, amusing ending as well.
Open Book - I've done a file like this - Cursed Words, making it permanent definitely added to the challenge level for the "victim"
Opening Andora’s box - I don't usually indulge in the sci-fi stories, but his one is quite fun and VERY hot.  mesmeri did a great job.
Oral Sedation Dentistry - Mind controlling dentist, hot mom and daughter, any questions?
Out in Left Field - Now this is the sort of research they should do in college :)
Out of Sight, Out of Mind - Hmm, that could be fun as part of a hypnosis session.
Out of the Friend Zone, Into the Fire - A word of warning to all would-be brain washers.  Make sure that whatever you implant cannot be twisted by the recipient or others.  Nice story.
Owning Nikki - A very nice and evil little story about a man using a co-worker through subliminals.

I'd originally started this as 2 parts, O1 and O2 but with only 4 or 5 files in the whole of the second part I merged them.