During Gibby and Baggles' wedding, Baggles squirts yogurt twice on the floor but when they show the floor it is completely clean.
The super-fan Heather, is seen with her phone taking pictures with the iCarly kids, but after she jumps to their table and is taken away, you see that her phone is not with her nor with the iCarly kids.
According to Father Steinberg, Gibby's middle name is Hayes, however iniWin a Date (2008), Gibby told everyone his middle name was Cornelius.
Bart the weird waiter should be fired for purposely sabotaging a customer's food. Even if Freddie was rude for making fun of him, revenge is never something to do on the job.
When showing Heather coming, they shifted cameras back to when they were comforting Spencer, you can hear Carly saying "It's okay." But you can see that her mouth was not moving.