Thanks but it was a simplified example from what I'm doing. I need to test a templating system and so my stuff is more like this below and BrowserUK's solution allows me to set all in a single sub definition. However I like your solution too and I'll keep it in mind for other contexts. Thanks!

my $test = 'show_stop_user';

my $calls = {
    show_home          => sub { show_home($config) },
    show_stop_user     => sub { show_stop_user($config,
                            {user=>'dummy',type=>'Users'}) },
    admin_users_new_1  => sub { show_admin_user($config,
                            { action=>'add',
                              messages=>{
                                  success=>['line1','line2']
                             }})},
    admin_users_new_2  => sub { show_admin_user($config,
                            { action=>'add' }) },
};

$calls->{$test}();
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Now I need to find out how I can redirect the Template::Toolkit output to the file $test.'.html' instead of screen...