Replica not only has a television playing a scene from Julie & Jack FOR NO REASON, but one of the characters is an actress who proudly announces that she got a part in Julie & Jack.
Having watched... maybe not all of Rifftrax, but a very large proportion of them, Birdemic was one of the hardest ones to get through. Filmmaking so bad that that even the riffers can't make it palatable; up there with Battlefield Earth, honestly. This looks... pretty bad, too.