VSS and GenIBL would be my favorites, followed by the Artistic Lens.
Well, of course BB's wonderfull shaders.

Apart from BB's stuff, Kaweckis Morpher is the most used freebie in my toolset.

A ship in port is safe; but that is not what ships are built for.
Sail out to sea and do new things.
-"Amazing Grace" Hopper

Avatar image of me done by Chidori.