Dear Raja Sen, No offence, but you seem to have compiled this in a hurry. You seem to have missed the "gems" like Toofan, Jaadugar, Lal Badshah, Inquilab, Boom, Armaan and have included fairly decent fairs like Family, Virudhh and may be Aladin.
Some of the movies listed are not bad movies at all. Viruddh and Family for example were quite good. Some of the worst Amitabh movies come from phase I of his era, and are hit movies, like Giraftaar, Coolie, Mard and Desh Premee.