What Neo said.
On the other hand, it's got that kind of infuriating Secret Depth thing that's become really popular lately that basically requires you to watch about half of a series before you can really get to like it.
Like, SU really doesn't pick up too much until about the end of season 1 and a lot of the great episodes are in season 2. Seasons 1 is 52 episodes long (~10-minute episodes, but still).
It is the only work of fiction that I am willing to recommend to
literally everyone, though, so I'd say it's pretty good.
Like, uh, I've got a couple two-hour (11 episode) watch regiments that try to avoid "filler" (which the show has none of, but you actually have to be somewhat invested to appreciate the fluff), keep early in the series (all but Lion 3 are in the first 26 episodes; Lion 3 is exceptional enough that I think it's worth it. It's been nominated for an emmy) and focus on some of the better stuff, one for people who like more personal things and one for people who like action more.
Laser Light Cannon
Bubble Buddies
Steven's Lion
Giant Woman
So Many Birthdays
Lars and the Cool Kids
Steven the Swordfighter
Coach Steven|Joking Victim
An Indirect Kiss|Fusion CuisinesSpace Race|Island Adventure
Lion 3
Gem Glow
Cheeseburger Backpack
Bubble Buddies
Serious Steven
Steven's Lion
Giant Woman
Steven the Swordfighter
Lion 2
Coach Steven
Mirror Gem
Ocean Gem
Course, I didn't put too much effort into that. Not just that, but ending the second one with the half-season two-parter might not be the best. The first one is what I would probably watch through again.