What Are Your Favourite WordPress Plugins?

Discussion Time

Recently I wrote the post Top 10 Useful Plugins For Your WordPress Blog, I was thinking about all the other great plugins ive probably missed. The question is: What are your most desired plugins? Do you have plugins you can’t live without?

Everyone know the most comment ones like Akismet, All in one SEO, WP Super Cache e.t.c lets see if we can gather some less known ones.

Limit it to 5!