'It's time [to] explain the meaning of "Hurd". "Hurd" stands for "Hird of Unix-Replacing Daemons". And, then, "Hird" stands for "Hurd of Interfaces Representing Depth". We have here, to my knowledge, the first software to be named by a pair of mutually recursive acronyms.
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But I think the one the I like the most is the GNU Hurd, from https://en.wikipedia.org/wiki/GNU_Hurd:
'It's time [to] explain the meaning of "Hurd". "Hurd" stands for "Hird of Unix-Replacing Daemons". And, then, "Hird" stands for "Hurd of Interfaces Representing Depth". We have here, to my knowledge, the first software to be named by a pair of mutually recursive acronyms.
— Thomas (then Michael) Bushnell'
I'm a bit of a fan of Monty Python, so I really enjoyed learning to program in Python :)
Python's documentation and examples are full of references to the show (spam and eggs being the most prominent, I presume).
And also is its community: there's the Eric IDE and Python's built-in IDE called IDLE, bot named after Monty Python's Eric Idle.