This script was written for a guy who kept disconnecting from IRC and hated having to manually change back to his main nick when his old user finally got dropped from the server.

raw 433:*:{
  if ($2 == $mnick) {
    .notify on
    .notify $mnick
  }
}
on *:unotify:{
  if ($nick == $mnick) {
    .notify -r $mnick
    .timer.cn 1 1 nick $mnick
  }
}