That's certainly better than the 1,1 you were passing earlier. You could also iterate over the hash and build up accessors.

while ( my ( $name, $code ) = each %hash ) {
    no strict 'refs';
    *$name = $code;
}
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And then you could just call:

$x->blah;

That provides a couple of advantages. First, you don't have to remember to check if the key in the hash exists (as I forgot to do in my example to you). Second, you can gain a limited bit of introspection:

if ( my $method = $x->can('blah') ) {
    $x->$method;
}
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However, beyond your example, I don't really know what your needs are, so this may not work for you.