Have you guys got any/know of any?

Been looking for some.
Thanks.

OSR {Oblivion Stutter Remover}-needs OBSE {Oblivion Script Extender}
Streamline also needs OBSE
Knowledge of TESEdit in order to clean plugins can help {MAKE ABSOLUTELY SURE, you know what you are doing and have a good grasp of it BEFORE atempting}
There are many Pre-Pyffied optimized mesh packs on TES Nexus that can help with framerate.If you are using a 64 bit OS ie-Windows Vista or 7 and have more than 2 gigs of RAM, You can use CFF Explorer to rewrite the file header for the Oblivion .exe in order to utilize tha extra ram you have.

Oblivion is very CPU dependant so a fast CPU means as much or more than your GPU, and Installing RAEVWD/FCOM+ 200 other mods and expecting 60fps is just not going to happen. Every mod you install has an effect and a heavily modded Oblivion on a very high end computer around 20-30 fps is a probable expectation.
That pretty much covers my knowledge so Good luck! :read:

http://tesnexus.com/downloads/file.php?id=23208
http://tesnexus.com/downloads/file.php?id=10400
http://tesnexus.com/downloads/file.php?id=33403
http://tesnexus.com/downloads/file.php?id=15278

Pyffi vanilla mesh, and removing compression from Oblivion - Meshes.bsa

Just to clarify: Oblivion Stutter Remover won't increase Frames Per Second (FPS), generally. What it is does is what it says - remove stutter; smooth things out some.

Streamline can increase FPS, but it depends entirely on the settings you end up with, in Streamline's ini file.

The other suggestions so far are good though (not that OSR and SL aren't "good", by the way - I use both!)

Also, you might want to bookmark http://tesivpositive.animolious.com/ - in particular, you might want to have a look at the sections under "Tuning Oblivion", at present.

Most of the mods mentioned here are on this site i use most of em so far game seems to run more smoother. I aslo use game booster as it cuts down on unessecary background programs that take up a lot of memory and processing power.

http://preventcrashesinoblivion.page.tl/Mods-which-prevent-bugs-and-crashes.htm