Continuity mistake: Mickey is drying his mom's hair with the hair dryer and hands her a toy phone. The way he grabs the phone changes between shots.
Character mistake: When Mollie goes to Albert's office for the first time since having Mickey, Albert asks if he is walking yet, and she says no. In the next scene with Mickey, he walks, and is walking when he visits Albert's office.
Other mistake: When Mollie changes Mikey's diaper in Albert office, she just changes the diaper without cleaning his butt.