The scene showing the progress of the eclipse has the shadow of the earth moving across the disc of the moon in the wrong direction. Either reversed footage, or SFX generated by someone who doesn't know how space works.
When Pat is interacting with the dog, he refers to the dog as a good girl, and the dogs are continually referred to as bitches by their owner, Barclay, but it is clear it is a male dog.
When Thomas says 'How you doing' coping Joey's famous catchphrase there is absolutely no way he could know that by watching 1 disk of any season. Joey does not say that line for the first time until of season 4.13. So even if Allison put in disk 1 of season 4 there is still no way that he would have heard that line.
While Chandler does say his catchphrase at the start of season one.