Rallying to Keep the Game Alive - S1-E4
Audio problem: When the couple is having dinner there's a shot from behind him saying "but you're right." The movement of his jaw and mouth are totally out of sync.
In the Waiting Room of Estranged Spouses - S2-E6
Character mistake: The former Marine, Spenser, refers to himself as a soldier. A Marine would never do that.
When Cupid Is a Prying Journalist - S1-E2
Continuity mistake: When Joshua is waiting for his interview, watch behind Emma: The number of people next to the pool table increases/deceases randomly between shots.