well here's this guy's recollection of the Arby's meat - and there's a Snopes story about it.
there's some truth to this dude's story, the Arby's roast beef comes in these bags filled with what the company calls 'self basting' liquid - it's a gross gelatinous type liquid. i've seen the kids at Taco Bell open up similar bags of their taco filling meat - it's incredibly gross looking.
"I used to work at Arby's as a teenager, and this is the truth: It is NOT roast beef. It is some sort of scientific abomination. First, it comes in big, clear plastic bags in the form of some kind of brown, sewer-water looking liquid with tiny bits of mystery meat in it. The whole thing was about the size of a flat basketball. It must be comprised of a gelatin-like substance that coagulates when cooked or something. We would insert several of the bags onto a rack inside a type of cooker where it would take maybe an hour or so to turn solid. We would then remove it, slit the bag open and slice it in the machine like a normal deli-meat would be. Its totally FAKE."
LINK TO SNOPES.COM article