Mine

on *:text:*:#: { if ($nick isop $chan || $nick ishop $chan) {
    if (!chanspy == $1) {
      %spy.mpe = $chan
      %spy.room = $2
      %spy.enabled = true
      join %spy.room
      msg $chan Chan Spy on %spy.room iS Now EnaBleD
    }
    elseif (!unspy == $1) {
      msg %spy.mpe Chan Spy on %spy.room iS Now DisABleD
      part %spy.room
      unset %spy.*
    }
    else {
      if (%spy.enabled) && (%spy.room == $chan) {
        msg %spy.mpe >>> $v1 ( $nick ) $1-
      }
    }
  }