It is one-sided in that it doesn't critique Gish in any way, even though there is plenty of criticism to be made about Gish's presentation as well as Plimer's.
The documentary ends by pointing you to CMI's website--I'll point you to the Talk.Origins website.
UPDATE: This web page at the Talk.Origins website points out that Plimer was correct in his criticisms of Gish's booklet. The ICR did finally update and correct that booklet around 1994, meaning they continued to sell a booklet which made false claims for nearly a decade after they knew that to be the case.
UPDATE (January 1, 2009): You can see the "Facing the Fire" video yourself here.