Just saw it for the third time and still love it!
With each viewing I find more holes to poke in it, though. (doesn't stop me from loving it, but here goes anyway):
Drax mentions their having traveled "halfway across the quadrant". A short time later Zamora says they'd traveled "halfway around the galaxy". Which is it? Still later, Rocket wants to travel to "the other end of the universe" to get away from Ronan. Colorful metaphors, I suppose....maybe I'm from Drax's planet.
No one knows the orb contains an infinity stone (except probably Thanos) until the Collector tells our guys. Then, suddenly, the next time we see Ronan and Yondo, both of them know. How did they find out? They read the script? Maaaaybe the Broker knew and told Yondo, but Ronan....
Handy that the Collector has a bunch of visual aids ready to go to tell the story about the stone.
If all Ronan needs to do is let it touch the surface of Xandar, why bother with an assault on their most heavily defended city? Just drop it anywhere on the planet.
Ronan orders his fighters to kamikaze and they all zip straight down. Somehow Rocket and a bunch of Ravagers make it to the surface ahead of most of them. By the time they were able to set up their Space Invaders arrangement, all of the Kree fighters would've already impacted. And what was the point of such an order anyway? So they get to knock down a few buildings before DESTROYING THE PLANET.
(already discussed Zamora shooting up through the floor earlier in thread)
Peter's mom knew her cassette tapes. She even had the second tape cued up past the leader for him.
The cassette player on the DVD/BD menu is rotating the wrong way.