Over the years I’ve begun to collect various interpretation of and allusions to Psalm 23, in part as a teaching opportunity to help students think through the  significance of this psalm, and in part to help them expand their interpretations. Here are some of them:

a liturgical dance set to Bobby McFerrin’s version of Psalm23

U2 and Bob Dylan’s song “Love Rescue Me”

Coolio’s song “Gangsta’s Paradise” (which begins with a line from the psalm)

Pink Floyd’s song “Sheep”

The Eagles’ song “Long Road out of Eden”

There are also some useful reference articles online:

Textweek.com’s treasure trove of links

James H. Charlesworth, " Psalm 23 and the Fear of Stagnant Waters," SBL Forum , n.p. [cited Feb 2004].