Best book or documentary related to mindfulness What is your best mindfulness book or documentary? I have experienced Vipassana retreats. I would like to know more about mindfulness.
Most Buddhists don't know what mindfulness is therefore i cannot recall any good books about it except a short talk by Bhikkhu Buddhadasa called The Use of Dhamma.
Pra Payutto wrote a lengthy book called Sammasati:
An Exposition of Right Mindfulness however it contains errors, such as the following:

It is attentive, as if keeping its eyes on each impression that
passes into consciousness and then bearing down on it. When one wishes
to concentrate on a particular object, it maintains one's attention
fixedly upon it, not allowing the object to drift away or disappear.
By means of sati, one keeps placing the mind on the object, or
recollecting it, not allowing oneself to let it slip from the mind.
There is a simile likening it to a pillar, because it is firmly
embedded in its object, or to a gate-keeper, because it watches over
the various sense-doors through which sense-data pass, inspecting all
that enters. The proximate cause for the arising of sati is a firm and
clear perception of the object [OMG!], or any of the different sorts of
satipatthana that will be spoken of below.

I recommend to read the scriptures, namely:

Indriya-Vibhanga Sutta: Analysis of the Mental Faculties.
SN 46.3 - Sila Sutta.
Maha-cattarisaka Sutta: The Great Forty.
Nagara Sutta: The Fortress.

In summary, &quot;mindfulness&quot; means &quot;to bring to mind (to recollect), to remember &amp; to not forget&quot; to practise the Dhamma teachings. Mindfulness does not mean to observe objects.
This video called &quot;Buddhist Meditation: Sati Sampajanna&quot; by Ajahn Jayasāro is reasonably good.