I've been looking through Funimation's YouTube channel, and they have many old series in their entirety for free. I usually watch Crunchyroll, Amazon Video, and Netflix... But I'm hooked with Funimation now.
Finished Samurai 7 recently, a pretty good action series. I remember watching an episode or two many years ago, but I didn't like it back then. I gave it another try, and I was pleasantly surprised. Storyline is cliche, but the setting is somewhat interesting and there's some nice character interactions and development. Ending was pretty cool too.







