THE WORLD MUST END! Since I rarely watch an anime while it's coming out, I just skip the "next episode" previews and go to the next episode. =] Then again, I just don't watch huge amounts of Anime period. It has to either be a classic or highly recommended by buddies.
I just wanted to reiterate how true this is. Next episode previews have nothing to do with anything; not even what is being shown on the screen at the time.
Anime shown on american television is gay. dragon ball z, naruto, yu-gi-oh. They have endless amounts of episodes, usually they just recycle ideas and put in different names. I like animes by the guy/studio who made Paranoia agent and by the studio that made Evangelion(which was shortly shown on american television). The interstella 5555 musical anime was pretty sweet.