Coolest Free Plugins

I know I find a really cool plug in when It works Perfectly & I don't have to pay for it.... I love Free Plug-ins That actually work. Well today I noticed that one of my websites did not have a log in page. I could access it from mydomain.com/wp-admin but I could not access it any other way. So I searched for a login plugin and I found Theme My Login or the link here 
http://wordpress.org/plugins/theme-my-login/. It matches the theme of your template. That is so cool....
I was wondering how I was going to get a regular Log in on my page. I'm so glad I found it. 
Another really cool plug in is User submitted post  http://wordpress.org/plugins/user-submitted-posts/
This plug-in allows users to submit an article to you and choose the category they want it to go under. Of course you get to approve or deny it. And it actually works-- and It's Free !