I love how if you call him out in the beginning he just dismisses the truth. what? no, no your not on a space ship! memory loss is normal! On an unrelated note, the ship's computer needs to sing bicycle built for two, even if it just shows the lyrics.
...I just watched a rabbit pull itself out of a hat, turn a bolling ball into a jack-o-lantern jump into the pumpkin, hat and all and esplode leaving nothing but a seed and thought "this seems strangely normal"