Found 3 really cool cheats for the game so far.
1 you dont need to pass a pilots liscence to fly, find the Airport at Los Santos and drive a car to the check-in point, park the car next to the hut and jump onto the roof, then your on the apron and you can fly either a Cessna or a Learjet.
2 Find the highest building in Downtown Los Santos (looks like tallest building in LA
and is the only one with a round shape) and there you'll find the entrance, pass through the "mission" bar and you get to the top of the roof.
Here you'll find a parachute and you can try out a bit of BASE jumping.
3 Do the same as 2 but when on top spawn the tank cheat (OO L1 OOO L1 L2 R1 Triangle O Triangle) and you can drive the tank over the edge and land on the freeway below, and if your lucky you sometimes land on something/someone lol without dying yourself.
Also been reports of a "Bigfoot" been seen in Red County, apparently a PS2 magazine has a £50 bounty on whoever can catch the Bigfoot with a VHS tape.
Its not the fall that kills u, its the sudden stop at the end..