Some good sites I've found regarding picture profiles:
We looked at this site a little bit in class. It has a lot of great information and features a variety of profiles that are optimized to get the most out of the fs100's sensor.
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Frank is a cinematographer, on his blog he has various links to different profiles as well as example photographs for each one. I've found this to be a good place for references as with it's many examples you can get going in the right direction and then "tweak" the profile yourself to achieve your desired image.
Provides a picture profile designed for post color-correction while also detailing why other profiles are not suited for post production color work.