[1] In 1992, Walker produced, directed, photographed and edited the PBS documentary Post No Bills on Los Angeles "guerrilla" satirical political poster artist Robbie Conal.
Post No Bills received a Silver Hugo at the 1992 Chicago International Film Festival.
Post No Bills was exhibited on PBS from 1993 – 1996 and was the first completed broadcast-hour ITVS-funded project in history.
[2] From 1995 to 1998 Walker followed the Squirrel Nut Zippers and created various media pieces[3] from the documentary Squirrel Nut Zippers: Musical Candy to the enhanced interactive presentations on the "Hot" & "Perennial Favorites" albums.
In 2006, Walker was named "best local filmmaker" by the readers of Atlanta's Creative Loafing newspaper.