I like it in baseball, though I'm sure the process could be tweaked somehow to improve it. I think the benefit of getting more calls right is worth the delays, and it seems like replay has reduced the amount of time managers spend arguing calls. One way of looking at it is to ask how many of the important and controversial calls over the years would have benefitted from replay. Armando Galarraga would have his perfect game, Jorge Orta would've been out and the Cardinals probably would've won the 1985 Series (granted, they still should have if they hadn't collapsed after the blown call), and Jeffrey Maier would be pretty much forgotten and the Orioles would've had a good chance of winning that ALCS game. Don't know if Ed Armbrister's getting tangled with Fisk in the 1975 Series would've been called interference, but I would've liked to know that someone was looking at the replay to get a better idea whether the call was right (and I assume the replay review wouldn't have taken any longer than the argument did). As a Braves fan, I'm sure Kent Hrbek's pushing Ron Gant off of first base in the 1991 Series would've been overturned, and I think there was a play in the 1992 Series in which one of the Braves' pitchers tagged a Blue Jay out at the plate with his glove while the ball was in his pitching hand. Eric Gregg's strike zone in the 1997 Braves-Marlins NLCS-clinching game couldn't have been reviewed, but modern technology would've given us a way to quantify how bad it was and might have led to some action. What other famous/important calls would or would not have been changed?