Thanks for the input guys. I need to do a test next time I have the car out in the rain (which may be a while here in Dallas) or find a sprinklered parking lot.
Last night I got the brakes to lock up momentarily from about 50MPH but I didn't brake long/hard enough to be able to tell if the ABS came on. It was while I was slowing down to turn onto my street. After I turned, there was a cop one house down getting out of his car and I just sheepishly drove by and turned into my driveway. What are the odds!