Back again with another hunter no brain macro. Since I was on his hunter and his offspec was marksman, said sure why not make one for it. This one is a spammable 1 button, with a modifier for Aimed Shot.
Macro might be outdated, please check the forums for up to date macros.
/castsequence [mod]Aimed Shot;reset=target Serpent Sting,Hunter's Mark,null /castsequence Steady Shot /castsequence Kill Command,Chimera Shot,Arcane Shot /castsequence reset=120 Rapid Fire,Readiness,Rapid Fire /cast Kill Shot /use 13 /use 14
UPDATED July 28, 2011: Added Arcane Shot to the rotation for extra DPS (Thanks Ashley for the idea).