James Gunn would keep a pile of little Play-Doh containers onset and if someone did an especially amazing job that day - whether it was an actor, a grip, a stunt man, or a PA - they'd get a canister of Play-Doh. He says he gave out 40 containers out over the entire shoot - on an 85-day schedule with a crew of two hundred: "I love the smell of Play-Doh - opening a new container and smelling it puts me in a creative, child-like place. And who doesn't love playing with Play-Doh?"
When Gamora is floating in space, Star Lord flies out to give her the helmet. Shortly after, Yondu brings them onto the ship, Gamora and the Star Lord don't have the helmet. However Star Lord's helmet retracts to a small device behind his ear. After he puts it on Gamora, it just retracts back to its smaller form.
When Quill dives through the air to catch the Infinity Stone, he's reaching for it with his right hand, but then, as it starts to transform him, it's clutched in his left. What is hard to see is that he switches hands as he writhes on the ground.
When Rocket is explaining his Prison Escape Plan and Groot goes to get the battery mounted on the wall, Groot's food tray disappears from his right hand as it passes behind Peter's head. However, you can see that his body leans to the right as he passes behind Peter in the frame and a clinking noise can be heard, hinting that he dropped the food tray off onto the table.
Yes. Back in Knowhere, a bandaged Collector stands in the rubble of his lair, while one of his collections, the cosmonaut dog, comes by and licks him. A voice asks the annoyed Collector, "Why do you let him lick you like that?" The voice is revealed to be that of Howard the Duck, voiced by Seth Green.
Was this Thanos' first screen appearnace?
No, he previously appeared during the closing credits of The Avengers, where he was played by stuntman Damion Poitier.
Where is Stan Lee's cameo in this movie?
Stan Lee is seen on the planet Xandar. Rocket spots him with a younger woman and berates him for cheating on his wife. He laughs and calls him a Pervert.