In the latest sign that the NFL Draft is quickly becoming the biggest sports event of the year that isn't actually played on a court or a field, Lance Zierlein (author of the Chronicle blog "The Z Report" and co-host of the morning show on 1560 (The Game!)) is now hosting a weekly, one-hour radio show devoted to the upcoming NFL Draft. I listened to a bit of it last night, and it certainly has promise, particularly for those of us who are complete fanatics. It's kind of like heroin for draftniks. Or heroin for heroin addicts.