And nothing spices up reading like a scene with tension and high emotions between characters. It just makes things more interesting.
BUT if done wrong, a tense scene can really annoy the reader.
The best way to create a tense scene the wrong way: contriving the tension. If the characters are screaming/punching each other for a stupid reason, the reader will not be amused. There's one good way to describe a scene like that: Melodramatic. Another way to describe it: a terrible waste of perfectly good paper and ink.
So if you read through your work and find that the characters' reactions are out of proportion to what they should be, it's time to tone it down.
Look Out for These:
1) Arguments about something insignificant, that amounts to the main conflict of the story.
2) Reactions out of proportion to what it should be.
3) Characters arguing with each other when everything points to the fact that they should get along. EXCEPT if there's a good reason.
How do you catch melodramatic moments?