Write down everything Matt Cutts says.
Then do the complete opposite.
= profit
Ah, so this is quality....social bookmarking,directory submission,etc
My favorite method. You need money. Find some high PR blog/site (relevant to your niche) written by normal blogger which doesn't know much about SEO. Find his/her email and asking them to add your link on their previously posted article or a new one (don't forget to tell them you will pay for it).