Rollercoasters are a thrill-seeker's first love.
Space Shuttle in Enchanted Kingdom (Laguna, Philippines) - the first one that I've ever really rode on. The feeling of discovery and adrenalin was just so great; can't exactly put it into words. Definitely the ride that made me fall in love with thrill-seeking adventures!
The Dragon in Ocean Park (Hong Kong Island) - It's an Arrow dynamics looping rollercoaster, complete with three 360degree turns. One hell of an adventure! It's the first one to have a complete sidewinder element with two lift hills. It was fun alright, if only my hair didn't go haywire during the ride.
The Abyss in Ocean Park (Hong Kong Island) - It's a Turbo drop which raises you to about twelve stories high, I ain't sure and drops you straight down in a free fall motion in about five seconds. It actually made my heart stop when I rode it the first time. But the sights at the top were amazing. Definitely something I'd come back to.
Space Mountain in Disneyland (Lantau) - The coaster didn't have any loops, only sidewinder elements and sudden drops. It's an indoor ride and perhaps it's the complete darkness coupled with 3D images of space that makes this ride a thrillseeker's best friend. It's dark so you can't see it's coming.
Kingda Ka (NJ) - The worlds tallest and fastest rollercoaster.
Montu (Busch Gardens) - I think it's the only inverted rollercoaster that I know of. Absolutely beautiful.