Kami nomi zo Shiru Sekai: Megami-hen or The World God Only Knows 3, is my most anticipated anime this season, and with a first episode like this one, I am not disappointed. This season feels like it did back when I first was introduced to the series -- during it's first season -- mainly because Keima is in a position where he uncomfortable. He has to interact with the women he previously conquered, because there might be a goddesses inside of them, and the twist is that they remember everything from the first time, which is fantastic.
Every element that I loved about the previous seasons were on display in this episode; we got the sharp, quick humor from Keima, and that small taste of romance, since the girls do remember their relations with Keima. The only complain I can see during this episode is the fact that they skipped over other conquests, in favor of a summary, but you could say that having another season of pretty much the same song and dance, would get stale eventually.
So really, The World God Only Knows 3 is a pretty solid yes on me watching for the rest of the season. This episode alone, is one of the better ways to introduce an anime that has been going for two other seasons.