Q u o t e: On my main, highest Aimed Shot crit was 302,900. Yes, it was some kind of odd bug, but I think the Mage I hit was probably screaming Nerf Hunters for two months straight after that.
3005 Aimed Shot Crit on a trash mob in AQ20. I have fairly mediocre gear for being in a guild with the first two bosses of Naxx on farm status (full GS, Crossbow of Smiting, Zinrokh, Prestor's, Cape of Black Baron, Master Dragonslayers, Signet Ring of the BD Exalted, DM trinket, and Blackhand Breath), so I'm still boggled at how that happened. Earthstrike was not activated.
I'll post a screenshot as soon as I get home.
I suppose if this was on Vael with full sunders and Burning Adrenaline, it would have been a 6010 damage Aimed Shot crit.