Incorrectly regarded as goofs: The many continuity lapses and other apparent technical errors are a matter of deliberate stylistic choice in this pastiche of 1970s "B" action movies.
Revealing mistakes: When Hatori Hanzo writes the name "Bill" on the window, you can see where the Bride has wiped it out in earlier takes. They re-fogged it for more takes, but you can still see the previous wipes
Factual errors: The Bride would have a feeding tube in her stomach, not just IV fluids, if she were comatose for four years.
Continuity: SPOILER: After Vernita's little girl discovers The Bride standing over her dead body, The Bride hides her knife in front of her body. In the next shot she is holding it behind her body.
Continuity: When "#2" shows the picture of her daughter, she holds by the top/side between shots.
Errors in geography: When the Sheriff is driving to the church in El Paso to investigate the killings, the radio station makes reference to its location as Wichita Falls, Texas. Its unlikely that one could get a Wichita Falls radio station in El Paso because the two Texas cities are 600 miles apart.