Colton of The Daily Rotation wrote, "Last night at the 2012 Milwaukee Film Festival, I was in attendance for the Milwaukee premiere of 3,2,1… Frankie Go Boom starring Charlie Hunnam, Lizzy Caplan, and Chris O’Dowd. Relying on familiar faces to carry the rather weak and unfocused script to the screen, the film ended up lacking the laughs and the character development that it so desperately needed."
