When George is leaving the apartment after asking Melody to marry him, he picks up three presents. But by the time he reaches the door he only has two.
Ted goes into the TV room (towards the end of the movie) and eats a carrot. A few seconds later, when he is seen leaving the room, he still has the carrot in his hand.
In the movie they infer that Bellevue Washington is north of Seattle and that it is in the country. Bellevue actually is just across Lake Washington from Seattle and the second largest city in King County.