This protocol is a phase I study. Patients may be eligible for an infusion of Multi-virus Cytotoxic T Lymphocytes (CTL) if they received a T-cell depleted (TCD) transplant from a related family member or an unrelated donor. Recipients of these types of transplants are severely immune compromised during the early post-transplant period and are more susceptible to certain viruses. The investigators hypothesize that the adoptive transfer of Cytotoxic T Lymphocytes (CTL) against certain viruses: Adenovirus, Cytomegalovirus and Epstein Barr Virus (Ad, CMV, and EBV) will be safe with regard to producing graft versus host disease (GVHD) or other infusion related toxicities.