I don't really remember that mission all too well. Haven't really been haunted in a video game although as FrozenLiquid says the hotel in Bloodlines was pretty creepy.
...by a game I mean. I'm way behind on new releases, so I'm playing games that come up on STEAM for bargain prices. So I just finished Mass Effect 1 around last Christmas, and did ME2 at the first of the year. Great games, both, btw.
Then I moved on to Assassins Creed, Bioshock 2, etc....and I'm currently in the middle of several campaigns of Kingdoms for the Total War series (like I said...way behind)...
When I suddenly got a strangely over-whelming urge to play a segment out of ME2...specifically, Jack's loyalty mission (for those of you that know the game).
Now, I didn't think that was a particularly great mission (although they're all good), but it wasn't my favorite by any means. But I'm still feeling compelled to play it again.
It haunts me...I'm getting OCD about it. I think I'm going to have to abandon my run as Apache and find a save where I can repeat Jack's OMG run just to get it out of my head.