I came into this thread expecting to just say Ka/Dragster, but after reading some other replies, I got reminded of some other good launches I've been on, too. :wink:
1. Kingda Ka - Okay, so this does still top my list. The second-to-last time I rode this, the launch on Kingda Ka was absolutely the most breathtaking thing I've experienced on a roller coaster. I swear the ride was running extra fast that day, because I couldn't believe how fast it was going at the end of the launch. It went down the other side of the tophat insanely fast as well. I can't say enough about how amazing a front seat launch on this thing is. It's an orgasm in roller coaster form.
2. Top Thrill Dragster - It's Kingda Ka except a few mph slower and WITH LAPBARS; which should make it better, but Ka edges it out because ^.
3. Storm Runner - I rode this a few days ago and it gave me some really good floater airtime in the back rows. I'm not sure I've ever experienced floater on a launch before. But it was fantastic, as was the rest of the ride.
4. Maverick - Really powerful launch right out of the tunnel into a large banked curve, not much more to say I guess.
5. Wicked Twister I love the insane first launch of this ride, and all the other launches are really great too.
6. Voodoo - The first launch is kind of weak compared to Wicked Twister, but I don't remember Wicked Twister having this kind of airtime in the back row OR this many positive gs on the back spikes. Maybe it's because of the non-twisted back spike?
7. Rock and Roller Coaster - Kind of a slow top speed for a launch considering all the rides above it, but it's still got great acceleration and flying into a dark tunnel up the first half of a 5g sea serpent makes it feel more intense than it is.
8. The Incredible Hulk - I don't remember liking this ride much because quite frankly I don't remember much of it at all. I got one ride on it after it reopened for the first time all day on the one day I was at IoA in a bollocks row that I didn't even get to pick because the line was so long. And of all the things that were not memorable about it, the launch was one of the more not memorable parts. I think this is the only launch on a coaster I have been on that I have not really cared for at all.