I'm biased by my love for 'The Hydrogen Sonata,' but my favorite will always go to the Mistake Not...
Which is short for Mistake Not My Current State Of Joshing Gentle Peevishness For The Awesome And Terrible Majesty Of The Towering Seas Of Ire That Are Themselves The Mere Milquetoast Shallows Fringing My Vast Oceans Of Wrath.
https://en.wikipedia.org/wiki/List_of_spacecraft_in_the_Cult...
My all-time favorite is "Ultimate Ship the Second".