Replay in baseball

After watching last nights Rockies/Padres game and wondering if Holliday scored or not I think baseball needs some form of instant replay. However, ESPN's Tim Kurkjian says no replay in Baseball because it would slow the game down and waste 10 minutes. This is the same sport where Steve Trachsel walking around for 2 minutes between pitches and Robby Cano walking around the batters box after every pitch is perfectly ok but taking the time to get the call right in a do or die game would be too much....