You might find it useful to search YouTube.com for movies about Beckett himself as well as videos of some of his plays. For example there is a very interesting 2000 version of Endgame with Michael Gambon and David Thewlis. Other videos include:
Many other potentially useful videos on Beckett and his work may be found on YouTube.com.
Search the Holmes catalog for films about Beckett and his works. Type SAMUEL BECKETT in a Holmes search box; select Author/Creator in the pull-dowm menu to the left of the search box; and then select Films &Video & Movies in the pulldown menu on the right