Windows 7 - Useful utilities

[/\ndy]

Hey guys, can anyone recommend any useful utilities for tweaking/optimizing windows 7? Preferably free ones.

All i have so far is CCleaner, Spybot S&D, Microsoft Security Essentials.

Whats everyone else using?

Thanks

 

[/\ndy]

bump

 

[/\ndy]

thanks for the input guys appreciated