ALGOL 60 was the first language I learned, in 1973. At Warwick Uni, they reckoned that virtually any science undergrad would need computer skills, so this was a compulsory course.
They ran an ICL 4130 and a 4120 at the time - designed by Elliott, so presumably somebody at Elliott was an ALGOL fan.
Never used it in any commercial setting, but it laid the basis for the structure used in any number of languages since. When writing COBOL, I often sketched things out using ALGOL to check things made sense before getting the coding sheets dirty.
Who remembers Backus-Naur ?