Here are some ACS example circuits. Some of these will also run on Spice and can be used for comparison.
You can run them in batch mode by typing "acs name" from the shell. You can run them interactively by starting acs then "get name". Then play, change probes, rerun, change values, etc.
The files "runall", "runsmall", and "runsmall.bat" are scripts so you can automate the testing. "runsmall.bat" is for MSDOS. "runsmall" runs only the circuits small enough to run on the DOS version. "runall" runs most of them. Read the scripts before using them.
"runall.out" is the result of running "runall". Ideally, you should get identical results, but there are often small differences in the machine math functions that will give small differences in the results. Any numerically significant difference represents a serious bug and should be addressed.