If you have subtitles, Spanish/Portuguese/Dutch are actually pretty easy to understand if you're a monolingual English speaker that reads a good bit. A lot of archaic words in English have cognates (equivalents) with modern Spanish especially, and if you're aware of the Latin/West Frisian roots present in the language we speak, they're not hard to decipher. Not saying it'll make you learn, but it's cool to be able to pick up an article in Portuguese and know about half of what they're saying