There was never any intent to follow history and once you accept this concept, there were interesting story lines. I don't know if I would recommend anyone pay money to see it. I watched it on a borrowed DVD. I thought the opening scene provided some tension and I thought the most interesting character was the SS officer throughout. Also the bar scene where the firefight broke-out was good. You never knew who would survive a scene. There was more dialogue than some might expected and I thought those scenes were good, but they had to take some liberties, not only with history, but explaining how the basterds managed to roam around France like they did.
I suppose I could place it in the same category as the "300" and its re-enactment of Thermopylae.