How to print with style to watchdog without devel

So sometimes i want to make some development on live sites that i do not want to enable and disable the Devel module due to perfomance issues. I found from dropbucket ( this awesome snippet that helps me a lot with "background backoffice" development. You can print arrays or objects to watchdog that looks pretty and structured too (in a more human-readable way actually)!
("my_module", '<pre>' . print_r( $my_array_or_object, true) . '</pre>');
Have fun! p.s: Do not forget to enable the System Log module (database logging / dblog module) for that. The admin page of the module is this: admin/reports/dblog
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