False advertising? Try these adverts for "StopSign", this supposed antivirus software that can find things that your real antivirus software (Norton, McAfee, Microsoft Security Essentials, etc.) can't. Like it finding 800+ potential viruses on your computer when Microsoft Security Essentials - recently updated and having run a full scan - says there's nothing.
The kicker? StopSign is actually malware - and yet they advertise it on TV!