Re: bounce
Here is one way:
http://scratch.mit.edu/projects/Mayhem/96405
Web-spinning Spider: http://scratch.mit.edu/projects/Mayhem/18456
3D Dungeon Adventure: http://scratch.mit.edu/projects/Mayhem/23570
Starfighter X: http://scratch.mit.edu/projects/Mayhem/21825
Wandering Knight: http://scratch.mit.edu/projects/Mayhem/28484