Heartbeat of Liberty City
Description: To do this, you’ll need a helicopter. Now, head to the Statue of Happiness using your map. Once there, bail out near the top. From here, enter the statue and climb up a ladder to see a beating heart chained down at the very top. You’ve now found the beating heart of liberty city!
Picture: http://img76.imageshack.us/img76/705/heartofamerica3articleiqo7.jpg
Bully Easter Egg
During the television show “I’m Rich,” the hosts talk about how one of the celebrities attends a private school. During that bit of narration, you’ll see Bullworth Academy grace the screen, it being the setting for “Bully,” another Rockstar game
Blue Hell Jump I
Description: Take a car over to Francis International Airport, but use a big one like an SUV. Then, drive sideways under a moving plane so that the wheels are pushing into you. There’s a good chance you and the car will drop below the world and after a couple of seconds, you’ll respawn back on the land with the car now gone. This is the first known blue hell jump in GTA IV.
Video: http://www.youtube.com/watch?v=_McQMDOLaus