When Ricky first gets punched and falls to the floor and Stan is talking to him, his arms are across his chest but when the camera pans out after Stan tells Ricky he's Arnie, Ricky's arms are lying on the floor, stretched out.
At the end when Marshall fields the call from Faber on Mary's BlackBerry, Marshall hits the end button and the phone goes to the home screen. The signal meter on the top right hand corner shows SOS written in red. BlackBerry phones can not receive calls when they are in SOS mode, only make calls to 911. Also, when the phone is ringing, the red status light always flashes. When Marshall is holding it, the low battery orange status light is flashing, not the red one indicating a phone call.