After Rodney is dumped outside Bigweld Industries by the giant magnet, all the metal shavings from the slogan sign stick to his head, just like the old-time Magnetic Face toys.
After surfing the waves of dominoes, Bigweld flies up into the air, and then lands. When he flies up, you can see dominoes fly up with him. But when he lands, no dominoes fall down after him
When Wonder-Bot puts the second group of dishes into Rodney's father, they are facing to the right. When he takes them out, they are facing to the left.
In the board meeting with Ratchet, the small television with Bigweld talking is not visible as the shot pans over the big chair. When we see it from the front, the TV is sitting high enough that it would have been seen from the back.