Working from home?

Does anyone know about LEGITIMATE work-from-home jobs? Do they actually exist? I've been searching and searching for US-based work-from-home jobs (proofreading, data entry, whatever) and everything on the internet appears to be a scam or requires some start-up fee that will eventually turn in to a scam. Even links from careerbuilder turned out to be "just pay this small fee to sign up" type stuff ... and I'm just not falling for that. But something US-based that I can do remotely is all I can legally do at the moment, so ... calling all home-based workers ... where did you find your job?