Oh! Id say TNG, ENT, VOY, then TOS.... I have not watched much of DS9 so i don't know where it stands yet, but considering what everyone says I'm excited to watch it! I loved ENT. I know a lot of people don't agree, and it might have to do with the fact that i watched them all in a row on Netflix in like a month or so. I thought the cast was great. I mean Dr. Flox! It doesn't get much better.