During the 2006 post-season, Byrnes was an analyst for ESPN's "Baseball Tonight" show. He has also appeared on Fox's baseball pre-game show and "The Best Damn Sports Show Period" talk show. Byrnes was a guest analyst for the first two games of the 2006 World Series pre-game show and for some of the 2007 World Series on FOX Sports. During the off-season, he often fills in on KNBR, a San Francisco radio station. He currently resides with his wife Tarah, daughter Chloe and their bulldogs, Bruin, Mr. Hitch and Bella. During the 2007 MLB All Star Game at AT&T Park, he was in a kayak in McCovey Cove with Bruin during the pre-game and game itself for the FOX Sports broadcast.