The section of the Usenet Physics FAQ titled "Experimental Basis of Special Relativity" has been cited here many times. I've just discovered that Tom Roberts has recently revised it. It now has information on experiments performed since the last edition seven years ago, and a larger section on "Experiments Which Apparently are not Consistent with SR/GR," with more analysis indicating why these experiments are generally not considered to be significant.
Here's the home of the current version:
Apparently the other commonly-referenced mirror sites have not all been updated yet.