As predicted, that 48-second snippet released last week was only a teaser; here's the full 3.5-minute gag reel from Thor: The Dark World. There are more dangerous things in the universe than Malekith, and they include recalcitrant ravens, Natalie Portman's propensity for violence, and Thor's cape.
Remember, Thor: The Dark World hits DVD and Blu-ray on February 25th. Or don't. I'm sure we'll mention it again.