For the bot try
Code:
on *:TEXT:!allnicks*:#:{
  var %i = 1
  while ($nick(#,%i)) {
    if ($nick($chan,%i) != $me) { var %allchan = %allchan $nick(#,%i) }
    inc %i
  }
  msg $chan %allchan
}

It should post all the nicks but the bots