Kung Fu Fighting by Carl Douglas
So, of course, it has to be Shang Chi, Master of Kung Fu:
(the above image is taken from Master of Kung Fu #22 written by Doug Moench with art by Paul Gulacy)
(the above image is taken from Master of Kung Fu #22 written by Doug Moench with art by Paul Gulacy)

(this shunkkch-ing panel is taken from Infinite Crisis #6 written by the current master of mainstream bloodsplatter Geoff Johns, pencils by Phil Jiminez and inks by Andy Lanning)
(this panel is taken from Invincible #12 written by Robert Kirkman with art by Ryan Ottley and colour by Bill Crabtree)
This face whacking panel is from the Avengers vol 3, issue #23 by Kurt Busiek (writer), George Perez (pencils) and Al Vey (inks).
This week's One Panel of Pain is from DC's Impulse #1, by Mark Waid (writer), Humberto Ramos (pencils), Wayne Faucher (inks) and Tom McCraw (colours).
...taken from Clandestine (vol 1) #1 brought to you by the mighty Alan Davis (writer and penciller) and Mark Farmer (inker).
...taken from Astonishing X-Men #18, courtesy of Joss Whedon (writer), John Cassaday (art) and Laura Martin (colours).