In the teaser, Jeannie mixes up her line, "How would it look if some other master's genie was in charge?" when the line should be, "...some other genie's master was in charge?"
When Tony sneaks back into his bedroom, the lights come on and he says, "Alright, alright, I'm sorry, Jeannie." Then Jeannie blinks accompanied by a sound effect...but nothing happens. Perhaps this was when the lights were to go on. A bit of uncoordinated business with her blink and the lights.