Watched it last night. REALLY good movie. The 3D was excellent in it. The plot was good, and I felt some of the twists were well executed, especially if you were like my brother and knew nothing of the comics. Although, @ToaKylerak wanted to see it in 3D so I had to cough up 30 bucks.
My brother didn't know who Ego the Living Planet was so he was surprised to see Ego having a face on the planet in the film, nor did he expect Ego to even have so much power. What threw me for a twist was the thing where he was Peter Quill's dad who managed to create himself a human form.
The biggest thing I absolutely despised Ego for (which is a good thing), was the fact that he was the one who put the brain tumor in Peter Quill's mother. I do have a problem with this however. He should have never told Quill that he killed her mother. That's where his whole plan fell to it's knees. Seriously, that was the dumbest thing in the whole movie. If Ego hadn't mentioned that he could have achieved his goals.
I did not expect them to kill off Yondu. But his sacrifice was well-warranted and fit into the theme of the film pretty well. Speaking of the theme, the theme of fatherhood and family fit really well into the movie. Some of it felt cliche but yet I still liked it. Matis was also a spectacular addition to the film and I'm glad she was included. I think my favorite characters this time, though, was Drax. He was absolutely hilarious.
I have some other problems with the movie too, of course. While funny, the whole "distortion while going to several systems" thing was a bit too silly. Baby Groot was fine but IMO I preferred it when he was grown all the way. Destroying Star Lord's Walkman wasn't a good choice either IMO but at least it was part of his motivation to defeat Ego. And while Peter Quill being a celestial definitely makes sense when it comes to surviving in space and holding an infinity stone, it felt like an easy write-off to such crucial plot holes from the first one.
The BEST part of the movie was definitely when Star Lord was fighting Ego and made a Pac-Man form. I laughed so hard and so loud. That came out of left field, and I absolutely loved it.
Overall, solid movie. Wasn't a fan of the cursing or inappropriate stuff but it was still hilarious.