Continuity mistake: When Mike is watching the tape for the last time, it shows that he was protecting Nicki. We can see a reflection of Mike's office, and the doorway. It's completely empty, but when the shot changes Nicki is standing right there.
Continuity mistake: When the vendor throws the hotdog at the press conference, a lot of the toppings/condiments trail behind it. When the shot changes and the hotdog hits Mike, there are no condiments trailing behind it.