SERIESMOVIESNEW & LAST CHANCESCHEDULEFREE EPISODESMoreDocumentariesSpecialsSportsPodcastsHBO MAXSIGN INGET HBOMAXSERIESMOVIESNEW & LAST CHANCESCHEDULEFREE EPISODESMoreDocumentariesSpecialsSportsPodcastsHBO MAXSIGN INGET HBOMAXSIGN INStream all of HBO plus more TV, movies, and Max Originals at no additional cost.SIGN INHBO Max Silicon Valley About Season Season 1Season 2Season 3Season 4Season 5Season 6Jack Barker Played by Stephen Tobolowsky Jack Barker is known around the Valley as “Action Jack,” respected for his get-things-done managerial style.