Nothing Good Happens After 2 A.M. - S1-E18
Continuity mistake: When Ted walks up the steps to Robin's apartment his bag is all creased and folded. When he arrives at her apartment it has no creases. (00:10:30)
Nothing Good Happens After 2 A.M. - S1-E18
Continuity mistake: When we first see Korean Elvis, Marshall has his hand on his beer. The camera cuts to Marshall and his hand is no longer on his beer. (00:12:00)
Continuity mistake: When the guys are at the bar before going to the awards show, we see Marshall raise his beer to his mouth twice from different angles, without ever lowering it. Also, the amount of beer in his glass changes instantly between the shots. (00:03:30)
Continuity mistake: When Ted is talking about getting a blessing from a pimp, Barney's drink just disappears from the table. (00:03:35)
Continuity mistake: When Ted and Marshall are watching Sandy Rivers read the paper on TV, the items besides the TV on the TV table switch according to the angle.
Continuity mistake: When Lily and Marshall are discussing which band to book for their wedding, the way Lily's shirt hangs changes frequently between shots. Sometimes the shirt hangs straight, in other shots it is folded back on itself.
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