Here's some RPC miners for all those mining via RPC. There's a CPU miner based on the Crypto++ code, a 4way miner using the 4way code included with Bitcoin, and a CUDA and OpenCL miner. The included readme.txt has instructions on how to supply arguments to the miners. Supplying a -help argument to the executable will show you the available options as well.
Want these miners as a screensaver? See this thread.
Downloads (Updated 2011-02-27)
RPC Miner Windows Binaries
RPC Miner Source
Use the CUDA miner for NVidia cards.
Use the OpenCL miner for ATI cards.
Use CMake to compile from the source.
Tweaking command line parameters for the CUDA and OpenCL miners will be necessary if you want to get optimum performance.
