I've found the personal productivity methods and techniques I use (such as GTD and Inbox Zero) to be hugely helpful, but I've always struggled with good ways to introduce them to other people.
Some people will seek new information out: they'll see you collecting actions or catch a glance of an empty inbox and actively seek out more information. Obviously those type of folks are easy to share with because they initiate the dialogue. People you're very close to are also easy because there's a relationship of trust and a history of healthy communication.
What's trickier is how to share with someone more passive. You think they would be interested, but you don't want to offend them or turn them off to the whole thing if they resent your approach as an implication that they're not productive now (kind of like offering someone a mint right after you've started a conversation, but taken more personally).
How do I introduce someone to personal productivity methods in a non pushy way so that it's not likely to be taken as critical, but instead taken in the spirit of sharing things that someone might find useful?