Questions & Answers about Esa película me aburre un poco.
Because película is a feminine singular noun, so the demonstrative has to agree with it.
- esa película = that movie
- ese libro = that book
So esa matches película in gender and number.
It comes from the verb aburrir, meaning to bore.
Here it is in the present tense, third person singular, because the subject is esa película, which is singular.
- Esa película me aburre
- Esas películas me aburren
So the verb agrees with película, not with me.