When Steve and Barney are fighting in the vaults, Steve uses his non-bionic left arm to push away Barney's bionic arms.
Even though weeks pass between visits to the restaurant, the same customers are dining in the background wearing the same clothes.
When the closeup image of the tape recorder is shown, the cassette has a pale blue label with a wide rainbow-stripe across the middle and black letters, yet when the nurse takes the tape into the next room to supposedly file it away, it has a dark red label with white letters. And then when the nurse hands the tape to the guy in the sports car, it has the rainbow-striped label again.
Immediately after Rudy tells the nurse not to bother untangling the tape, and switches off the data-plotting machine, the cassette is shown as already being outside of the recorder and in the nurse's hand; she could not have had time to eject and remove the cassette in just that short moment, especially if the tape was tangled up inside the recording machine.
During Steve's psychological interview, the tape recorder is clearly just in the "playback" mode - only the "play" button is pressed, instead of having the "record" button pressed, also.
Same footage used twice of Barney opening a metal door with a loud echoing clang, running down a hallway that has two brown-labelled doors in the right wall, and then stopping at the end of the hall and opening another door that has a large brown wooden bench-cabinet sitting beside it.
The audiotapes that are being used in the cassette recorder are pre-labelled with another program, so they are obviously pre-recorded tapes, not blank tapes that would be used for making new recordings.
Steve and Barney's telephone company truck and the light blue pick-up truck appearing in the same scene both have the same license place - Washington, DC tag C82270.
When Steve visits Oscar's office to confront him about the man in question, there is an Emmy award on Oscar's window sill.
The needles on the tape recorder's VU-level meters that indicate the ambient sound-levels do not move in sync with the speech that is being uttered at the time.
Visible at lower right when Steve and Barney argue outside the restaurant after Oscar's agent arrives to take Barney away.