[Mag]

Knife Throwing- Unless you have a balanced knife and know how to throw it. You are not likely to kill someone by throwing it.
Picking Locks- Everyone can pick a lock in mere seconds. I know I couldn't
Sliding under a truck- Indiana Jones comes to mind. They had to dig a trench for that stunt.

[mix4fix]

Story-line cross-dressing is believable.

Two black men can pull of being two rich, white, ditzy socialites.
A newspaper reporter puts on eye glasses and can't be identified as a superhero.
A geeky girl takes off her eye-glasses and becomes instantly popular.
A sister and brother can return to high school and nobody is none the wiser.
A high school girl can masquerade as a high school boy and nobody is none the wiser.

[JDoyle]

Walk away from an explosion and not even flinch 

[Early B.]

Drive a car without looking at the road.
Shoot a handgun 48 times without reloading.
Get shot or stabbed, wrap it, and keep fighting.
A broke older man gets the hot young woman.
Jumping on the hood of a car and hanging on for dear life.
Falling four flights and walking away.

[vrao81]

Hack into the Military/CIA/FBI in mere seconds with a few lines of code (Real hacking takes hours/days/weeks).
Guess someone's computer password in mere seconds.
Survive a gunshot wound with minimal injury.
Be out in the rain and dry the next scene.

[FullRangeMan]

Drive a car without looking at the road.
Shoot a handgun 48 times without reloading.
Get shot or stabbed, wrap it, and keep fighting.
A broke older man gets the hot young woman.
Jumping on the hood of a car and hanging on for dear life.
Falling four flights and walking away.

Chuck Norris can do all that, except persuade a woman.

[Letitroll98]

Picking Locks- Everyone can pick a lock in mere seconds. I know I couldn't

A former close friend was a locksmith and yes, he could pick any lock as fast as you can open it with a key.  But I agree completely with the other two.

[mix4fix]

A person who doesn't know kung fu can sneak into a monastery to train, get caught, and punished to fix the monastery's roof.  Spends a year building the bamboo scaffolding, practices while spying on the training , and invents a new technique of fighting.

Someone attacking you with a stool while you are holding a bowl of rice.

Being the better fighter while keeping one of your hands in the exact same position because of your religion.

[vrao81]

In the movies, the hero could get captured,  and about to be executed,  but the villain spends time taunting the hero and pontificating about his nefarious plans, allowing time for the hero to escape.