The most influential person in Israel is ...
Attorney General Meni Mazuz, following hot on his heels in 3rd place is Supreme Court President Dorit Beinish. Number 2 is a quartet of the state comptroller, state prosecutor, chief police investigator, and commander of the Lahav special investigations unit. The only politician in the top 100 is PM Olmert who is number 100.
When the most influential person in the country is the Attorney General, number 2 is the state prosecutor and number 3 is the President of the Supreme Court, it is a clear reflection of the fact that Israel is a Judicial dictatorship where the real power lies in the hands of the Justice system. Amazingly enough not a single minister (Defense, Finance, Justice, Foreign) made the list. The reason is simple, they have no real power. The real power lies in the judicial system which can arbitrarily quash appointments (see for example this post More judicial tyranny), and interfere in foreign and defense policy at will (for example the security fence, cutting off power to Gaza, etc.).
List courtesy of Haaretz