Just to add another version -- one of my first tasks when using a new machine is to scp the following script somewhere on the path as 'pmv':

#!/usr/bin/perl
for my $module ( @ARGV ) {
  eval "require $module";
  printf( "%-20s: %s\n", $module, $module->VERSION ) unless ( $@ );
}
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A sample use:

cwinters@www ~ $ pmv CGI Template DBI
CGI                 : 3.05
Template            : 2.14
DBI                 : 1.48
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