Looks like you omitted the variable in your execute statement for your ? placeholder. Try this...

sub load {
    my $class = shift;
    my $id = shift;

    my $dbh = Some::Class->get_dbh();

    my $sth = $dbh->prepare(<<"ENDSQL");
SELECT  field1, field2
FROM    table
WHERE   id = ?
ENDSQL

    my ($field1, $field2);

    eval {
#       need to figure out why this bind_param isnt working
        $sth->bind_param(1, $id);
        $sth->execute($id);   # ? is a placeholder, you have to supply
+ execute with the var :)
        $sth->bind_col(1, \$field1);
        $sth->bind_col(2, \$field2);
    };
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