They agreed to do so. You can hear their answers, and see pictures of their faces, at this link.
If you want to follow along, here is the list of voices:
1. Jim Haven, Creature, Seattle
2. David Angelo, David&Goliath, El Segundo, CA
3. Billy Jurewicz, Space 150, Mpls/LA/NYC
4. Jarrod Riddle, Space 150
5. John Boone, Boone Oakley, Charlotte, NC
6. Andy Azula, The Martin Agency, Richmond, VA
7. Matt Peterson, Creature
8. Judy Mam, Freelance, NYC
9. Jo-Ann Munro, Sid Lee, Montreal, QC
10. Ian Grais, Rethink Communications, Vancouver, BC
11. Carly Heims, Freelance, NYC
12. Dave Holloway, Freelance, Seattle
13. Todd Grant, Cole & Weber, Seattle
14. Ian Cohen, Wexley School for Girls, Seattle
15. Matt McCain, WONGDOODY, Seattle
16. Mike Arouz, Undercurrent, NYC
17. David Baldwin, Baldwin &, Durham, NC
18. Cal McAllister, Wexley School for Girls, Seattle
19. Paul Keister, Goodness Mfg., Venice, CA