@height8 VPN, no idea.
- Fing network duscovery
- Juice SSH
- VNC Viewer
- Pocket Git
- DroidEdit (code editor)
- Octodroid (for social git)
- X-plore file manager (Lonelycat Games!)
- Tweetcaster Pro Twitter
- Metal - Facebook
- Simplemind mind mapping
- Pocket Casts podcatcher
- GReader Pro - RSS
- Aquamail email
- Texpand Pro - keyboard shortcuts
I could go on, it's all subjective though. ;)