Mei chipping Tai Lung's tooth in her first kung fu lesson, and later punching out her ex-husband.
Mei Xing taking out the psychotic Xiang, using a metal fan and lightning.
The fight against Jiao Shen.
From "Soaring"
Duo fighting Koshchei for Lang's sake- and coming back for more after nearly dying the first time.
Mrs. Chin's knitting circle taking out a group of bandits with knitting needles and scarves. "Oh that's nothing! You should see what we can do with socks!"
Po and Tai's fight against Koshchei.
Po recreating the technique Oogway used to create the Devil's Mouth, in reverse.
Sonam killing The Bastard by looking at him. As Tai puts it, he's now an assassin so scary he can kill with a stare. Not bad for a seventy-year old snow leopard.