To the Intelligent Design crowd the movie was great. To the rest of the world it wasn't. Maybe you should read some of the critique as well.
The fact that science cannot explain something doesn't prove God. Claiming it does is fallacious reasoning.
If the steady state theory were true that might be argued, however the evidence does point towards some type of big bang event.
Steady state theory (now rejected) argued that matter forms form nothing spontaneously. Big Bang suggests there was a "starting point" to the moment of creation. but it doesn't show that it was the first time.
Likewise, the fact that science can explain something doesn't disprove God nor does it eliminate the need for God nor is it the only possible explanation for the cause of an event. Claiming it does is fallacious reasoning and yet it's used by scientists constantly.