What are your most have add-ons

[Zac-Donald]

Just post what you do, perferably (like animator, VFX, modeling) and what are your must have plug-ins/add-ons, post links if you want.

[Helli]

Animator/Rigger

My definitly most used script is something I wrote myself for changing timing with hotkeys.
Then there is the stretchy soft IK Plugin --> http://www.xsi-blog.com/archives/109
The LM weightmap tools --> http://www.alamaison.fr/3d/lmWeightMapTools/index.html
The Blooh_Ghost Tool --> http://www.xsibase.com/tools/plugins.php?detail=1323
And yea definitly the CG_Breakdown Plugin --> http://www.xsibase.com/tools/plugins.php?detail=1634

[mocaw]

Enhance: XSI procedural library is a must have for many even if they don't know it.

http://www.shaders.co.uk/enhance_xsi/

[septopus]

guys post links if you can to those must-have tools :)