Okay Awesome - S1-E5
Continuity mistake: Ted asks if he had a stroke at the start of the episode and puts his hand to his chest. Camera cuts and his hand has swapped from his right to his left on his chest. (00:00:35)
Okay Awesome - S1-E5
Continuity mistake: In the opening scene at the bar, Ted's beer bottle moves from in his hand on his lap to on the table between shots. (00:00:30)
Okay Awesome - S1-E5
Continuity mistake: When the bartender holds up the napkin with the price of the drinks on it, he is holding it straight. The shot cuts to the view from behind, and the napkin is now held at a clear angle. (00:08:50)
Okay Awesome - S1-E5
Continuity mistake: When they first arrive at the club we see Barney, in close up, undo some of his top shirt buttons. A few seconds later, he is seen in the background with his shirt buttoned. (00:05:30)
Chosen answer: She was finally shown at the very end of the last episode of season 8, continuing into season 9. The actor's name is Cristin Milioti: http://www.imdb.com/name/nm2129662/.
Knever