我变得痴迷的Grimm节目。

obsess [ 痴迷]
I don't think this good word using in here.
Let me translate what you said:
I become obsessive Grimm shows

我不可停看着它。

I can't stop looking at it.
in my feeling, you are looking an objection.

no like " watching"

虽然， 我觉得它有很多好的性。

性 in a single word, it means sex

虽然= though

虽然， 我觉得它有很多好的性。
Although, I think it has a lot of good sex. [ that I read in Chinese]

第一个， 它谈论鬼神和我喜欢这些主题。

First, it talks about ghosts and gods and I like these themes.

我变得痴迷的Grimm节目让我痴迷。

我不可停看着它看着它我无法停下来。

虽然， 我觉得它有很多好的性。

I don’t know what you are trying to say.

第一个， 它谈论鬼神和我喜欢这的一些主题。

如果仅此一项，就没必要用“第一个”了。