When Angela discovers Robert climbing out the window, he goes from damp to soaking wet in about three seconds.
When Ray is holding the tray with cups of coffee, it is obvious there's nothing in them, especially when he sets the tray down, and it creates a visibly loud hollow sound. This was because Ray Romano was scripted to stand in shocked awe for 3 solid minutes, and it would've been far too difficult with full cups of coffee.