Other mistake: Jackson, and Max are in bed together due to a sickness. When Matt brings Tommy to them you can hear Max say "Say your line" to Jackson. (00:21:55)
Other mistake: When Michael walks into his office and sees Shawn, Michael is wearing a wedding ring. Looks like he forgot to take it off prior to shooting the scene. (01:00:00)
Other mistake: Luke and Lorelai are talking in the diner. Lorelai asks Luke if he ever wanted a fresh kid. Lorelai then says to him "you'll never get to go to your kid's graduation." Are we to believe that Luke didn't go to April's high school and college graduations?