Public Safety Ex-Offender Self-Sufficiency Act of 2006 - Amends the Internal Revenue Code to allow a business related tax credit for investment in residential housing units for certain low-income individuals who were convicted of a crime punishable under state or federal law by a prison term of six months or longer (ex-offenders) and who participate in a program of support services, including job and entrepreneurial training, designed to make such ex-offenders self sufficient.