8 months of weekly treks through Sacrarium, first time I've seen this guy:
http://img82.imageshack.us/img82/9878/elel0pj.png
The SS doesn't do him justice, he's fucking huge, easily twice my size.
The main problem with SE's "NMs that you're just supposed to stumble across" is they put a level 60 NM in a level 50 cap zone that depops when the weather dissipates and doesn't come back for hours. On the very rare occasion someone will actually stumble across him before he depops, say "holy fuck I hope he isn't true sight", then go on their way.
PS. He is not true sight.