A new version of the NVclock Nvidia overclocking application for Linux has been released, this time with support for Geforce 8 GPUs:
NVClock - Nvidia overclocking on Linux!
This might be a big thing for Daniel among others, as it brings overclocking to users of newer GPUs.
There is no Fedora RPM at present, so it must be compiled by source.
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Notebook: Dell XPS M1330 Running Fedora 11 Linux (Leonidas)
Desktop: ASUS Rampage Formula X48
Intel Core 2 Quad Q9450 (Yorkfield) @ 3.51Ghz
4GB DDR2-800 PNY
Albatron 8800GT 512MB
Corsair HX-620 PSU
Running Fedora 11 Linux (Leonidas)
Dual Dell 2407WFP 
Drivers, Games, Demos, Mods and Overclocking Tools At AOAFiles