When Johnny is talking to Moira about replacing the plumbing his hands change position - in the shots from the front they are clasped together but in the side view they are by his sides.
Dr. Ted (Dustin Milligan) refers to himself (again) as having gone to "med" school with Shannon (Tara Joshi). Since he's a veterinarian, he should have said "vet" or "veterinary" school.