My favorite original English accent (or English-to-English, so to speak, as you say with German-to-English) is the Jamaican accent. Some reggae shows on the radio, I tune in as much for the DJ's voice as for the music.

Go listen to Linton Kwesi Johnson narrating the history of reggae in a BBC Sounds documentary, to see what I mean. What a voice, my god, it goes down like dark honey, a thing of beauty.