Thomas Hobbes said:
To be fair, 960 points is with all maximum damage with all weapons hitting: the best- case scenario. The actual average is half that multiplied by some messy equation involving each attack's to-hit. It's vulnerable to DR, requires lots of weapons of returning or recovering lots of weapons....
I wondered what would happen if you combined two classes that gave sneak attack. Now we know.

This ought to be interesting.
Firstly, It is as follows, for hammerhead;
Thrown Dagger is 1D4+5 Int bonus for Insightful Strike (Swashbuckler)+1 for being a +1 dagger,+2 for Specialization (within 30'). 1D4+8, critted=24 +6D6 Sneak (36)= 60 HP max damage per dagger.
Next, I have 2 weapon fighting, improved two weapon fighting, greater two weapon fighting and rapid shot and Haste. That's 8 attacks a round.
Next, Palm Throw allows each attacks to be 2 daggers (each with the chance of critting and getting the sneak damage. Unlike Manyshot, nothing in any text precludes this).
60 damage X16 daggers =
960 points of possible damage.
Yes, it is vulnerable to DR, or someone who can negate my 9th level Sneak ability (high level barbarian etc...),Fortification armor,etc... but they are Ranged Touch attacks.
Unlike a magic bow, which gives all of it's bonus to it's arows, no matter how many it fires, I have to buy a *%^#load of daggers.
Currently (not finalized), I have 16 +1 daggers (36,832 of my 110,000GP), as well as a bunch of normal ones, iron,silver etc...in a Haversack/bag of holiding.
I only gained 1D6 of Sneak from the Skullclan Hunter, and that wasn't my intention(I could have gone assassin or something and done even more damage).
You see, the Skullclan hunter allows my Sneaks to be used against Undead...
The Classes are all Core, or from the Complete Warrior/Miniatures HB, within the realm of CS's book selection.
The class is hardly broken, since I will never, under any circumstances, actually do that much damage (mathmeticians,please feel free to get to work on probabilities of 32D4 and 96D6 rolling max...,after hitting 16 times and critting 16 times, that is.). I have vulnerabilities in the lack of a huge huge bonus weapon (I'm sure you melee types will hav a staggering amount of damage/special things as well).Protection against missiles would hurt my effectieness (although I'm still attacking 7 times a round in melee at that point).
I did a Quick non-Gestalt version, and he still could do around 396 HP of damage in a round at max...
Ah, the knife-thrower has arrived.
PS:My attack line looks like this:
+20/+20/+20/+20/+20/+20/+20/+20/+15/+15/+15/+15/+10/+10/+10/+10...
1D4+8 Crit 17-20/X2 Ranged touch attacks.