Yes, don't jump off the building, you are not spiderman. (yes... i just watched Spidey 3 few hours ago)
Instead, try this. It's called the G-Max Reverse Bungy. A extreme high adrenaline pumping thingy located at Clarke Quay.
For this picture, too bad there's no one on it yet. Else, you will see someone in a capsule being shot up high into the sky. The capsule is held together by the two slanting frame. It goes up 60 metres into the air with speeds up to 200km/h!
See the person here in the picture, maybe the guy is asking the girl to go try. haha...
Would you try it?
Update: Victor a visitor to this site has a picture of the capsule. Also a writeup of an indicident about Gmax that happened about 1 year ago.