Why do most Assassination spec's have Murder? It seems like those two points could be spent in a much better place (Imp. KS anyone?). Maybe I am just crazy but the math doesn't seem to work out for me:
Murder: 2% dmg increase against a few mobs. Thats 2 extra dmg per 100 dmg. Only for the rogue.
Imp KS: (3 talent points) 9% dmg increase for everyone while stunned, and the tank takes no dmg while the mob is stunned. Not a whole lot, but more that 2%
Here is my talent build: http://www.worldofwarcraft.com/info/classes/rogue/talents.html?2053001055021325010513203022000000000000000000000000000000000000000
Let me know what you think.