I didn't watch Rebels until earlier this year when I was on a SW kick and absorbing lots of EU stuff. I spent years thinking the show would be a Disneyfied kids show due to when it was made, but it ended up being one of my favourite entries in the franchise. Kanan and Ezra's arc may be one of my favourite Jedi stories in the series. Hyped for this show.
It's an animated Star Wars series that takes place between the Original trilogy and the Prequel ones, closer to the Original, largely focused on the rise of the Rebel Alliance by following the crew of one Rebel starship.
I thought it was fun. Nothing super amazing, but solidly enjoyable. I also liked it a lot better than Clone Wars (which started too slow, felt too predictable, and had pacing issues).