Again, talk to a stranger at an audition, a director you've worked with, or an agent you'd like to sign on with. Who do they like? What backgrounds do they prefer (natural, white, grey etc.)? Use every resource available to you to give you the product you want.
This list is incomplete, and in no particular order. Please leave any photographer suggestions in the comments and I will add them!
Kathy Whittaker Steven Noreyko ShutterBug Kevin Nguyen Kenneth Gall
Ken Weingart Kelly Cameron