10/14/2009 at 04:00 PM EDT
As the four major broadcast networks prepare to roll out a week of scripted programming Oct. 19-25 that will highlight volunteerism, stars like Faith Hill
are calling upon fans to stand up and serve.
In a new spot for the Entertainment Industry Foundation's volunteer initiative
, iParticipate, Hill tells viewers, "Now is our time to work as one ... What will you do?"
The PSA airs Wednesday at 10 p.m. on NBC. Or you can watch it here
on the iParticipate site!