Only major gripe coming out of it was what the fuck happened to Odin, did Loki kill him, or did he pretend to be Thor in front of Odin in order to rule, before sending Thor off? Can't see his rule lasting long if he's just imitating Thor, but if he killed Odin surely Heimdall would eventually notice. Wonder how the 3rd one will go, I think Chris Hemsworth said he wanted it to go down the path of Ragnarok but who knows, it's so far away. Until then I suppose shacking up with Natalie Portman will have to do.
The other big issue I had was with the frost beast jumping to London to eat a dark elf and never being seen again, but they addressed that in the 2nd post-credits scene, which was utterly brilliant.
Anyway it was a fun movie, probably a 7/10 from me, would have liked to have seen more of Sif, Tom Hiddleston and Kat Dennings' were boss again. Mew-mew?