I've always liked knowing that English has a sister language, Frisian. It's still spoken, mostly in the Netherlands, but also in Northern Germany and Southwestern Denmark. There are features that mark both it and English off from all other West Germanic languages (that is, from Dutch, High and Low German, and Yiddish), forming an "Anglo-Frisian" subgroup. Anyways, insomnia drove me to try to find Frisian radio online, and I was ultimately successful. I listened for a while, and I must admit that I wouldn't have been able to tell it from Dutch or some form of Plattdeutsch. What did strike me, though was the quality of the "r" sounds. Before vowels they were just a lingual trill, but after them they were alveolar approximants. Isn't that amazing? That is, they were the same as English "r" sounds. I do not know if this means both languages preserve this odd (and rare) sound from their common ancestor, or if Frisian somehow picked it up from English. In fact, I think this fact is barely known - I had a hard time finding it mentioned at all, and I found nothing that described it having different pre- and postvocalic qualities.
On another note, while listening to Frisian radio I heard a cool song called "Yesterday Man" by a certain Chris Andrews. Turns out it was a big hit in England and Europe in 1965, but was unknown here. In fact, there is a surprising number of such songs, many of which are quite good. I'll write more about this later.