Continuity mistake: Season 2, "Good-bye, Harry": In Vancouver, while Greg and Sam stand on the street talking, Greg puts a coin into a gumball machine. He's still touching the dispenser when the shot cuts, but then he's abruptly several feet away from it. (00:47:50)
"The Incomparable Connie Walker": When Dillon visits Mayor Walker's house, Walker's red carnation is on his left lapel. But one shot of him is, for some reason, reversed, causing the carnation to switch itself to his right lapel for a moment.