Oh wow, that sounds really interesting

You're chatting with the person sitting next to you on an airplane. He tells you that he's a professional writer. You're impressed, so you say this.

Oh wow, that sounds really interesting.

Oh wow.

Say this when you hear something surprising, interesting, or upsetting:

A: I met Michael Jackson once.

B: Oh wow. Really? How did that happen?

A: So, it looks like we're moving to San Francisco.

B: Oh wow. You're moving? When?

That sounds interesting.

"That sounds interesting" is a common phrase in English. You can use it in a wide variety of situations:

When someone says something interesting, you can use this phrase with an intensifier like "really" or "so":

That sounds so interesting!

If someone says something and you can't think of any response, you can also use "That sounds interesting", without any intensifiers:

A: I'm a student at the law school.

B: Oh yeah? That sounds interesting.

You can also use this phrase if you want to hear more about an offer or proposal:

A: I think that you'd be a great actor. Would you consider acting in one of my web videos?

B: That sounds interesting. Where do you film them?