This technique is reaallly cool!! First, take a PCG 600 bike(Sanchez will also work) and go near the big stairway in downtown that you can use to junp over the road and onto the roof of Ammu-Nations. Have a good run-up and use it to jump at full speed! It gets a bit in slow motion, so when you are halfway across, press escape. Then type the cheat 'big bang' 10-20 times(I typed 50 times once, honestly!) and then resume the game. You will die, but you will remain on the bike and you'll be sent way, way, waaaayyy above vice city! The view is awesome!!! If you wanna watch it again, just press F1 and you'll get a replay. When yu are very high up, move the mouse for better viewing.
Do the same thing, right until you are again halfway through the jump. Press enter to get off(in mid-air!) and wait a second. Then press escape and again type big bang 10-20 times. The force of the explosion will send you rocketing many buildings awwaaaaay!!
This may not help you in the actual game, but it's fun anyway!!!
Added by: Subarno Hossain Jul 8th 2008, ID#12821