2) Another Hero In Hell’s Kitchen
Unfortunately, Daredevil doesn’t make a cameo appearance in season one of Jessica Jones (how great would it have been for Matt Murdock to be the one defending her at the end of the finale?), but Rosario Dawson’s Claire Temple does.
That in itself is a very cool Easter Egg, but it’s what she says about the Man Without Fear which is the most noteworthy thing here. Claire makes numerous references to her dealing with Daredevil, vaguely referring to the fact that she treated him and was ultimately kicked out of her apartment after the chaos which took place there when armed thugs came looking for the vigilante.
This also seemingly confirms that Jessica Jones is set following the events of Daredevil, though it’s surprising that there isn’t so much as a single mention of Wilson Fisk’s arrest.