When Will introduces Grace to April, the pencils in Grace's hair changes between shots.
At the beginning of the episode Will takes two bottles of water from the fridge. He unscrews the lid off them both and picks them both up. In the next shot he picks the second one up again.
When Will walks through the door, and Grace picks up a ball of paper and hits it over to him with a racket.
When April goes to Grace's office to pick up a key, she enters and asks Karen "Is this Grace Adler Designs?" Then a couple minutes later while giving Grace another pep talk she states that is says Grace Adler Designs on the door. If it is written on the door, why did she ask Karen if it was the right place?