How I Met Your Mother (2005) - 119 mistakes in entire show

Continuity: In the 14th episode of the 5th season, "The Perfect Week", Lily and Marshall mention that they've been using the same toothbrush ever since they've been together, but in the 14th episode of the 1st season, "Zip, zip, zip", Marshall and Lily are simultaneously brushing their teeth with a tooth brush each (before Ted and Victoria get home).

Continuity: In the 7th episode of season 5, the scenes before Robin and Barney leave the diner vary depending on the angle. From outside we see that Robin fixes Barney's suit before they leave, but from the inside she doesn't.

Continuity: In the 7th episode of Season 5, the scenes when the "Storm-Trooper" (actually, a robot) passes by the window do not match. The first time we see it, from the outside, as soon as he passes, Robin notices him and points towards him, but the second time, from the inside, she doesn't point at him.

Continuity: When Marshall and Barney are talking in the back of the cab, the red-edged black book on the dashboard moves back and forth between shots, though the cab is stationary.

Continuity: When the group are at the bar, just as Ted asks Barney's opinion, Marshall's beer bottle goes from at his mouth to on the table in a second.

Continuity: When Robin steps out of her front door to give Ted directions, she wraps her cardigan around herself. In the next shot the cardigan is instantly open, and she wraps it around herself again.

Continuity: When Marshall is pouring champagne, the amount poured is much less than that shown when they all raise their glasses.

Continuity: When Ted tells Robin that he loves her, Robin's hair jumps from behind to in front of her ear between shots.

Continuity: After Ted's Saturday night party (second of the three), when Ted, Lily and Marshall are sitting on the couch, numerous things change or suddenly appear behind them. Clothing is instantly on the back of the yellow chair and black chair, a wood chair appears, furniture moves, etc.

Continuity: When Marshall runs after Ted to tell him to get French Onion Dip, his robe keeps changing from crossed over his chest to straight down.

Continuity: In the closing scene at the bar, the level of beer in Marshall's glass goes up and down without him drinking any. Also, the glass goes from in his hand to on the table in an instant between shots.

Continuity: In the opening scene at the bar, when Ted is debating whether or not to ask out Robin, Marshall's beer is in his hand when the camera is on him, but on the table when the shot is from behind him.

Continuity: In the opening scene at the bar, the level of beer in Ted's glass goes up and down between shots.

Continuity: The morning after the second party, the items on the coffee table change instantly between shots. Several beer bottles and blue cups vanish, whilst a red cup and red bowl appear.

Continuity: At the third party when Lily sits Ted down to talk to him, Marshall stands behind Ted with a beer bottle in his hand. The position of Marshall's hands on Ted's back changes between shots.

Continuity: When Marshall is on the phone to Barney, the green highlighter jumps back and forth from on the desk to on top of the open book.

Character mistake: After learning that the guy who he thought was hitting on Lily is gay, Marshall says "I've never been in a fight". However, in Season 4, "The Fight", he states that he has been in plenty of fights with his brothers.

Continuity: When Robin is talking to her boss about his dog, the pens and pencils in the holder on his desk change depending on the camera angle.

Continuity: After Natalie throws spaghetti at Ted, the amount and position of the spaghetti pieces changes instantly between shots.

Continuity: When Barney is crouched down, leaning against Robin's chair, the money in his right hand vanishes between shots.