Tutara
Adventurer
Comprehend Languages is one of my 'always takes' as a player, and sees a lot of play at the tables I play at. Suddenly a combat encounter can be a social encounter, or an ancient unknowable text can be deciphered (and I love the visual of having the caster have to touch the text as they read it).Have you seen the humble comprehend languages spell turn out to be very useful or lifesaving in your games?
It's not strictly Comprehend Languages, but a good language moment was when a druid player I had, who was hunting down an elusive cell of spies, tried to use Speak to Animals to ask an innocuous rat if it had seen any sneaky looking humans pass by, and was surprised that she couldn't understand its squeaks. This tipped her off that it was a were-rat in disguise who was just making squeaking noises, rather than a real rat. It then dawned on the party just how many of the other 'rats' were watching them very carefully from the shadows...