There are numerous films about CBM and fracking. Below are some of the most popular and informative.
This is long but interesting and worth a watch.
Just under 8 minutes in length. This video on Shale Gas, created by the European Commission, seeks to put forward a balanced view of the shale gas industry in Europe.
13 minutes long trying to reflect the pros and cons of shale gas extraction in the USA.
At only 5 minutes long this gives a good overview on the opportunities and dangers associated with fracking. The same opportunities and danger exist for CBM extraction.
Fracking Hell
At only 18 minutes in length, Fracking Hell is a useful short introduction to fracking.
Gasland
Gasland is a full feature length movie about Fracking and its affect on American communities and ecosystems. See a trailer here and search for the full movie online: