Do you use Greasemonkey scripts?
Do you know of any scripts to recommend?
I use Firefox
For scripts I use the Unfold All, Kill File, Kill Nav-Bar, and LJ Hook on LJ. I think I'd go insane without some of the scripts I use for LJ :S
But for other sites I use Download Link for You Tube. YAY! That one rocks. I know I have a few more installed, but those are just the ones off the top of my head.