“Won’t Get Fooled Again” is episode fifteen of season two of Farscape.
Crichton comes round in a hospital on Earth after being hit by the energy wave in the Farscape module – just like he was in the first episode, “Premiere”.
As this is the second time he’s apparently come back to Earth (it also happened in “A Human Reaction”), he doesn’t exactly believe this, and reacts violently. Aeryn is there, but she has a different name and doesn’t remember him. Nor do the others when he encounters them – and those like Zhaan and Rygel really don’t blend in well with plain vanilla humans.
Crichton is still not convinced, but he keeps it hidden.
It does seem highly unlikely that he has actually returned to Earth this time.