I've only recently found time to start watching Star Wars Rebels (I'm caught up now). Wasn't sure I would like it as much as Clone Wars, but it's starting to grow on me. I think it has a real potential to fill in many of the unanswered questions about the time period between eps. 3 and 4. And since it's apparently one of the only story lines that count as canon these days, I think we should all pay attention about what happens.
I really like all the characters. Zeb vs/+ Ezra is great, especially with Chopper thrown into the mix.