Among my favourites are:
Mervyn Peake's Gormenghast and Titus Groan but not Titus Alone (and I enjoyed the BBC adaptation)
Frederick C. Crews' The Pooh Perplex on literary criticism styles
and probably more relevant to this forum:
Lancelet Hogben's The Mother Tongue - probably way out of date now but I still find it fascinating.
and an absolute delight:
Mots D'Heures: Gousses, Rames and N'Heures Souris Rames
but not the German equivalent Morder Guss Reims

Rod Ward