I started watching season 1 and assumed it was going to be like Family Guy in space, and there is only so much of that I can stand. I was pleasantly surprised! It was funny without being terribly crude, with an interesting plot and good overall character development. My only complaint is the seriously TIRED trope of Gary getting a "no" from Gwin, then constant harrassment by Gary, "if only she would give him a chance" which of course she does and cue eye roll. Really?
As soon as I saw season 2 was out I binge watched it. It's even better! Gary definitely grows as a character, and isn't always the bumbling idiot he was in season 1 which is refreshing, especially in a cartoon. The story, while a bit convoluted still flows well and adds even more character development. In season 1 I didn't much like Triborg, but he's awesome in season 2. This is a cartoon that will make you laugh, smile, cry and get excited, even the music is epic!
There comes a point in season 2 (episode 9) and I was amazed at the direction it went and the events that happened. FREAKING LOVED it!
If you've not watched it yet. Do it.