erc-highlight-nicknames

To activate this module, put this in your init file
    (require 'erc-highlight-nicknames)
and add highlight-nicknames to `erc-modules' by customizing it.

Or put this in your init file
    (and
     (load-library "erc-highlight-nicknames")
     (add-to-list 'erc-modules 'highlight-nicknames)
     (erc-update-modules))

Press
    M-x customize-face RET erc-highlight-nick-base-face RET
to customize the face that will be added before the color, if you want
for example all the nicks underlined.