5. Jane Foster's T-Shirt Foreshadowed Thor's Power Returning
In the scene of the first Thor movie where Thor, powerless, confronts the Destroyer Armour (which was being controlled by his rogue adopted brother Loki), Jane Foster is wearing a T-shirt portraying a picture the sun (with a face) emerging from behind a cloud. This was representative of the subsequent events, in which Thor would be "killed" by a punch from the Destroyer Armour, but the act of bravery in confronting it proved him worthy of wielding Mjolnir again. As a result, the hammer returned to him from the temporary S.H.I.E.L.D facility in which it was enclosed and, in turn, returned his formidable and godlike power and allowed him to emerge, from the brink of death, as powerful as ever - just as the T-shirt was conveying in pictorial analogical form.