Getting focus groupers

JOEL: I've never run a focus group, sir. How do we get participants?
BART: The American way, Joel. With market forces.
BART: We bribe them. Vouchers, gift certificates, free food...
JOEL: Doesn't that result in overly positive opinions?
BART: Exactly!
GREG: Hi, I heard something about a Frostie coupon?
BART: Yes sir! Just sign this release form without reading it.
GREG: No PROBLEM. Oooo, free pens!!