Yeah, I watched the first two seasons.
It was very good. I enjoyed it a lot, and loved that it wasn't PG rated. The Titans pulled no punches. Without posting any spoilers: ******WARNING MAY CONTAIN SPOILERS****
My only complaint was the (IMO) rush job they did at the beginning of season 2. I understand that they wanted to introduce a new villain in Slade, but they killed off Trigon (this world ending threat) too easily, and then just moved past him. They could have just done that at the end of season 1 instead, and started fresh for season 2.
Otherwise it's a solid series so far, and I'm looking forward rot season 3.