Finally! Not Spiderman 3! It's Destroy All Humans!

Yep! It's Destroy All Humans! This tip only works on Rockwell at the Blue Moon Cinema. If you don't know where it is, go in the saucer from the fairground towards the furthest house icon which means "Landing Zone". Land there and walk towards the city. On your right, there it is. Or, find out where it is using the Rockwell Race.
Anyway, make sure that there is no awareness at all for this to work. Don't worry, though. It's worth it. Go behind the theatre screen and fire an Ion Detonator straight into the air. Oh, make sure you're standing back. Detonate it when it reaches the highest point directly behind the screen. A huge chunk will come flying off. Go and use PK to lay it flat. Then, stand on it and use PK to lift yourself into the air while holding Square (so you don't fall off so easily - depending on how wobbly the launch was, it may worsen things). Walk around on the platform and basically do whatever to stop yourself from falling off. The moment you fall an inch, you cannot use PK until you hit the ground. So basically, you've lost it. You can move the Right Analog Stick up to go up.
See how long and how far you can fly without falling or letting go of PK! Film it and send it in to me on this blog!