Buster's Army uniform has always had his name on the right side; when he leaves the hospital, it's on the left side.
When Michael picks up the plate with toast, there are two pieces. Gob removes one and there is only one left, yet the next time the plate is seen, there are two pieces on the plate again. Gob clearly takes one bite and puts the piece of toast back on the plate almost immediately.
The nurse caring for Buster refers to herself as Adelaide, but her name tag can be seen reading "Nurse Julia".