I have a few tips and tricks for the Sidekick 2008 but it always works for the Sidekick II and up.
- Screen capture a webpage while surfing: Menu + Shift + P
- Email a website picture immediately: Menu + Shift + Right Trigger
- Recent Page List: MENU+SHIFT+B (In The Web Browser)
- Sidekick Mirror: MENU+SHIFT+M (Back Key To Cancel)
- Flash Light: MENU+F (Repeat To Cancel)
- Secret SnowBored Game: Menu>Settings>About Sidekick then MENU+SHIFT+8
- Web Browser Full Screen: MENU+SHIFT+T (In The Web Browser Then Repeat To Cancel)
- Join Chatroom In AIM: MENU+SHIFT+J