Overall an enjoyable, fun watch - but not great.
The characters never really develop, they just sort of amalgamate into slightly different versions of the same people, but none of the things that happen are either too good or too bad and nothing ever really changes enough to make any one episode really stand out from another - giving this a definite 'episodic' feel.
It's humorous at times, but not often laugh-out-loud funny, and overuses variations of the same joke over again a few times. You'll chuckle the first time you hear the joke, but not the second time. The same recycling is more evident in the moral and romantic dilemmas throughout the series.
For being fun but not worth skipping work/school/appointments for,
Ah! My Goddess is awarded: 8.25 / 10
Worth watching once, but not worth analyzing; fun but not sensational.