has its moments

Although something was/is overall not very memorable or enjoyable, a few parts (moments) are
enjoyable/memorable.

Example

1. Overall, Spiderman 3 is not a very good movie. Still, it has its moments, especially when
　　Spiderman is flying between buildings.

2. It’s in these quiet moments that the film has its moments of honesty and in its small details
　　that it has its moments of hilarity.