After years of programming with C-like langauges, I actually came to really appreciate the syntax of Erlang. It's actually fairly simple and straightforward. I think the biggest issues people have with it are:

* Capitalized variables names

* use of comma, semi-colon, and period as clause delimiters

It's interesting, but I think that Prolog-style syntax is probably the easiest to read if you don't have syntax highlighting available (though I don't think there is as much of a difference with syntax highlighting).