I've decided to try MAMP on new Mac OS X 10.5. Mostly because PHP bundled with Leopard doesn't have GD library (otherwise it has quite cool set of modules). The other reason that is better Marc Liyanage's PHP installer is not yet ready for Leopard.

But after backing up all my MySQL databases (around 200Mb dump) it turned out that you can't acces MAMP's mysql via terminal to restore it (or I was something terribly missing from FAQs).