It seems that I missed a Hamas member who was killed in very similar circumstances last month.
So my count is now up to 164.
UPDATE: 165.
At approximately 16:00 Wednesday, 29 November 2006, 3 gunmen shot dead Jihad Suleiman Abu Nsaira, 40, with a live bullet to the head, when he was walking near ‘Abdul Karim al-‘Aklouk School in the center of Deir al-Balah town in the central Gaza Strip. Abu Nsaira was killed for a family revenge.