If the beginning teaser is considered an Act in television production terms, one of my problems with Enterprise was that the teaser was usually really short, and ended on a light note, such as Archer floating around with water droplets in the shower in zero gravity and falling to the floor when gravity came back, instead of a situation of menace or danger that would compel the viewer to keep watching.
Kor
There was also an ENTERPRISE episode in which the pre-credits "teaser" consisted of Mayweather quietly reading a book until he's summoned, none too urgently, to the bridge--and not because of any vital "Red Alert!" type emergency. It's just "Mister Mayweather, please report to the bridge."
Granted, this scene plays out in zero-gee, which is kinda neat, but there's literally nothing exciting or cliffhanger-y about it. Mayweather puts down his book and heads for the bridge. Period.
I guess we were supposed to be so impressed by the zero-gee effects that we would overlook the fact that
nothing actually happened in the scene. But that was supposed to be the teaser?
It was like they were making an effort to
avoid being exciting!