mail-in rebate scam

I would be interested in hearing from anyone who feels they have been "taken
in" by a mail-in rebate offer.

I'm currently wating for a $100 mail-in rebate for an NEC monitor that I
bought from Future Shop. Three months later, no rebate has materialized
despite letters to NEC, Future Shop, and the rabate handler.

A few years back, it took 8 months for me to get a $50 rebate from Iomega
for one of their Zip drives. It took letters to the Better Business Bureau
amd the Attorney General of Utah before that one finally arrived.

Anybody else with mail-in rebate horror stories? Better yet, has anyone hit
on a successful strategy to induce the retailer to finally pay up?