1) been on that... leathal weapon is a good one because it is an
upside down rollercoaster... quite fun... did it with my friends 4
times in a row...
2) its called the tower of terror.. i think, been on that too...
fun too... but very long queues... though we did it back to back...

3) the seaworld one is called the corkscrew? been on that
too...
4) have not been on any in BKK
5) The rides in genting are mild...
There are others like the scoobydoo one at movie world
My favourite has to be space mountain at disneyland, if you have
ever had a chance to take the ride when the lights are on... it
sure becomes interesting...
Magic mountain at disney was pretty good too.
There are a host of rollercoaster rides I have been on in the US
that are much more "fun" than those in the gold coast... too many
to remember...