Experimental results are presented which describe the effects of bulk flow pulsations on film cooling from a single row of simple angle film cooling holes. The pulsations are in the form of sinusoidal variations of static pressure and streamwise velocity. Visualizations of film cooling distributions and trajectories illustrate dramatic alterations which occur as the pulsations are imposed on the film cooled boundary layer. In particular, significant changes occur as the coolant Strouhal number becomes greater than 1-2 and the film changes from quasi-steady behavior to non-quasi-steady behavior. Data from these two regimes are presented and discussed along with time-averaged surveys of injectant distributions at different streamwise locations, both with and without pulsations. The results provide clear evidence of the dramatic impact of bulk flow pulsations on film cooling heat transfer.