Your most important mixing plugin?

I know, it's really hard to put them in order and pick one, but let's try.

Here's one of mine: Massey Tape Head.
Just a really good "faturator". Often a cure for thin and clinical sounds. Always adds a bit of beef around the bones. Especially great for snares, kicks, and drum busses. I grew up beefing up sounds in an analog desk (still do it), and things like this in the digital world are a blessing.

It's only available for Pro Tools these days, but I was lucky to buy it when it was available as a 32-bit VST, so these days, in addition to Pro Tools work, I use it in other DAWs via 32 Lives bridging system.
Wouldn't want to do without it!

Airwindows has tried to model this one, and it's called Drumslam.
http://www.airwindows.com/drumslam/

What's your "secret weapon" in mixing?

I simply couldn't choose just one however if you forced me... I would probably choose a console/channel strip emulation.

Something like the Scheps 73

dude, i am the same way.

Wal Martian wrote:I find myself using camel crusher on almost every track

It's got to be Console 1.

Before my mini hiatus from music making I was using it constantly. It's also had a decent price drop recently so it's worth checking out.

I can't do a thing on mixing without this one

this one for me.

EQ!