[2] Day directed the documentary Saviors of the Forest which was shown at the Sundance Film Festival.

[citation needed] In 2002, Day co-produced the musical documentary Under The Covers, followed by Alternative Rock and Roll Years in 2003 for Discovery Channel.

[6] He also produced and directed The Pussycat Preacher, a film about Heather Veitch and her organization, JC's Girls.

[7] He holds the YouTube channel 'billschannel', which posts videos of wildlife trips around the world and a series named 'Real or Fake?'

[citation needed] Day dated Marcheline Bertrand for a time and helped her raise Angelina Jolie and James Haven, whom she had with Jon Voight.