When both Richard Levys are talking to Tad about his drinking/driving photo, and Shameless (Sean Hayes) says, "...to remind Jimmy Ing and America that you...", you can see his mouth moving too early before he says "and Armerica."
When Tad is talking to Rosalee at her cash register station, the cash register screen changes twice between shots. First, the total is $0 and there are no items listed. Then, the total is $15 and the screen is full of items. Then, the total is $34. Meanwhile, all of this time Rosalee has not scanned any items.
When Tad and Rosealee are flying to California, Tad sits in a single seat while talking to her. He turns to look out of the window and his right cheek is light by the sun shining through the window. In the reverse shot, his cheek is totally dark.
During the date of Tad and Rosalee, Tad's stuff appears and disappears from the table as the camera switches from facing Tad to facing to Rosalee. Moments later Tad starts taking out these objects from his jacket and puts them on the table.
When Tad is dropping Rosalee off at Piggly Wiggly after their first lunch date in her hometown you can see the top of the windshield and visors in the shots of her standing outside of the car. Tad says, "See you at 7?" and she agrees and watches him pull away, however, when they cut back to view her from the front you can still see the top of the windshield and visors. Which means the car would still be sitting in front of her.
As Rosis and Tad leave for Hollywood from the airport in Charleston, West Virginia the scenery at the airport as they are boarding shows rolling hills behind and above the airport. Yeager Airport knows that it sits completely at the top of a mountain in Charleston and there is no higher ground surrounding the airport.