For sports it's 98% or more jpeg, fine, Adobe RGB 1998, and that's about it except some occasional EV compensation. I process the images in Lightroom, but most of them get little more than a midtone curve and some clarity, and I have presets for these and others, so a few hundred can get to a pretty good state before I even see them on my monitor. If the light is really bad (extremely low or varied) then I'll switch to RAW.
Having said that, every camera is different. There are big differences between the D100, D2h, D700, D4, etc. So that has to be taken into account as well.
If you shoot in Adobe RGB make sure you convert (not assign) the image to sRGB for the internet or they'll look flat and washed out. I keep my images in Adobe RGB for printing because my printer can handle the entire gamut, and my monitor can handle about 97.8% of it, so softproofing gives me WYSIWYG prints.
If I'm shooting macro or something artistic for myself it'll almost certainly be RAW. If I'm on a pure photography trip it'll be RAW. Family vacations, jpeg. So it depends on the circumstances.
FWIW I always shoot RAW with initial processing done in Nikon Software so that I can change the picture controls white balance etc. as I like (Made some irreversible errors shooting jpeg on some team shots once because I was rushed and have been shooting RAW ever since). Quick processing is done in ViewNX. I usually use either standard +7 sharpening or neutral. If I process using Capture I remove in camera sharpening and sharpen using Capture instead.
Marc There are always two people in every picture: the photographer and the viewer.-Ansel Adams