It annoys the everlovin bejeezus outta me how little SebStan has gotten to do in any of the movies other than "Winter Soldier." He CAN act, does awesome things with the wee bits they give him, and it's obvious in all the movies how much Bucky means to Steve (props to CEvans for that) but he just gets either neglected by the script or left on the cutting room floor IDK which.

In all the things I've seen him in, McCallum always looks most in his element when his character is playfully annoying the hell out of one of the others. And since that's pretty much half or more of any MfU episode, it might be his best work even tho he's had a very long career. Of course Vaughn brought snark to almost every role, so the two of them together were great.