Hi! If we create an email in Netsuite can we embed a video in for the customer to watch? We want the video to come over like a picture so they can just click on it to watch in the email. Is this possible??

Depends where the video is hosting, I would imagine. If it's something open like Youtube, you can put it in an iframe in the email. That's not to say some clients would not block external links.

We use vzaar to host all of our videos. Would it have to be a link or could it be an actual video in the email? Thanks!

I would think a link, because sending a video attachment might be very heavy data, and certain attachment types do get blocked by clients... and also by any internal security running on the client (like MimeCast, for example). It is considered better practice to send a link to a hosted file / video, rather than burdening the recipient's client to know and accept the file type, and then even have the end recipient able to receive that, and expect that they have or would download the appropriate media player to support viewing that.