Gustavo has a banana in his pocket in his first scene. This was not planned or part of Gustavo's wardrobe, it was a banana that actor Seth Green was planning on eating after rehearsal was done. It wound up being forgotten in Seth's pocket and thus made it into the actual show.
When Joe checks the framing of the camera shot, he holds up his hands to frame the actual monitor. This is in reference to a cheesy and novice mistake many clueless first time directors do on set. The monitor shows the actual camera framing, so holding up ones hands to frame the shot off of the monitor is useless.