Mine

on *:TEXT:!Shank*:#: { 
  if ($nick isop $chan) || ($nick ishop $chan) {
    if (!$nick($chan,$2)) { 
      .notice $nick $2 isn't on $chan 
    } 
    elseif ($3 !isnum) { 
      .notice $nick The time for the ban is invalid, it must be a number.
    } 
    elseif (!$4) { 
      .notice $nick Please put a reason.
    } 
    { 
      inc %kcount 
      ban $+(-,ku,$calc($3 * 60)) $chan $2 3  7 $2 is stabbed over and over!! 4BLOOD!! - 7Noobs killed:4  ( $+ %kcount $+ )   
      .notice $2 You have been banned from $chan for $3 minutes Reason: $4- - $3
    } 
  } 
  on *:unban:#:{ 
    if $bnick { .notice $bnick You have been unbanned from $chan } 
  }
}