I get ESPN3 and I don't have a cable plan.
Right, Watch ESPN is what requires cable?
Yes.
Really? My recollection is anytime I try to watch something on ESPN3 the system asks me for my cable provider, DirecTV isn't an option, and I'm out of luck and can't watch the MAC games.
Yeah, really - for the most part.
ESPN3 is based on deals with your ISP, not television provider (obviously these are frequently one and the same).
For example, I do not have cable TV that includes ESPN, but I do have internet through Comcast -- I would have access to ESPN3 that way.
There is one major ISP, however, who ties ESPN3 access to having BOTH their internet and television service: Time Warner Cable.