I have recently been reading/collecting lots of Apache installation/information and etc and had recently came across some interesting Modules - and due to a hard drive loss and my continueal Reinstall of Linux due to corruption/instability/wrong setup I seem to have lost alot of these . Plus I wanted to get some feedback regarding this

mod_virtual (this was supposed to be an alternative method of providing Virtual Hosting as if you stick 150 <VirtualHost> in your httpd.conf file then that would get quite big)
mod_dos ( this was a module that helped prvent some basic
mod_stats (not sure if thats right. This was supposed to provide alternative Stats )

Also I am looking for feedback on
Modules that would be good to add.
Modules that will just be taking up Space