Now cleaned up:

use strict;
use Win32;
use Win32::OLE;
use Win32::OLE::Const 'Microsoft PowerPoint';
use Win32::OLE::Const 'Microsoft Excel';

my $ex;
eval {$ex = Win32::OLE->GetActiveObject('Powerpoint.Application')};
unless (defined $ex) {
    $ex = Win32::OLE->new('Powerpoint.Application' )
        or die "Oops, cannot start PPT\n";
}
$ex->{'Active'} = 1;
$ex->{'Visible'} = 1;
$ex->Presentations->Add();

my $Presentation = $ex->ActivePresentation;
my $Slide = $Presentation->Slides->Add({Index=>1, Layout=>ppLayoutTitl
+eOnly});
$Slide->{Name} = "Slide111112";
my $Title=$Slide->Shapes->{Title};
$Title->TextFrame->TextRange->{Text} ="Weekly Analysis - Closing Balan
+ce";

my $chart = $Slide->Shapes->AddOLEObject( 50, 50, 500, 500, "MSGraph.C
+hart" );
my $graph = $chart->OLEFormat->Object;
my $datasheet = $graph->Application->DataSheet;

$graph->{'HasLegend'} = 0;
$graph->{'ChartType'} = xl3DPie;

for( my $row=2; $row<=5; $row++ ) {
    for( my $col=2; $col<=2; $col++ ) {
                $datasheet->Cells($row,$col)->{'Value'} = rand();
    }
}    

$datasheet->Application->Update;
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