If you’ve already mastered Klingon and Esperanto and are looking for more weird spoken languages, check out Lojban (ˈloÊ’ban). Lojban was invented by some cunning linguists to investigate the Sapir-Whorf hypothesis while having a very regular grammar that is supposedly easy to learn and easy for computers to parse (apparently it can be specified with a context-free grammar which means that one should be able to parse with an LR parser, like the kind that can be generated with tools like yacc and bison).
Best of all, you’ll gain a greater appreciation for knee slappers like this one:
Q: How many Lojbanists does it take to change a broken light bulb?
A: Two: one to decide what to change it into, and one to figure out what kind of bulb emits broken light.