Available on the Cydia Store in the BigBoss repo.

Quickly access system information no matter what application you are in.

Supports:

• Activator
• Animations
• iPod touch / iPhone OS 3.0+

View information such as:

• Network info
• Location Info
• System Memory
• Disk Info
• Battery Info
• Current iPod Song info
• Which services enabled / disabled.
• Hardware info such as Serial, UDID
• Total Pictures, Videos, Songs, Contacts, etc.
  and much more…

Note: This is a MobileSubstrate extension accessed via Activator.

Website for more information