Cool new article on Symbian Developer Site 
As most of you might already know it's quite easy on SymbianOS to create a midlet that connects to a native application via a localhost TCP/IP connection.
As I wrote some times ago it should be easy to create a native symbian application that listens on a port and accepts connections from a midlet to perform some things that the midlet couldn't do on it's own.
Now there's a nice article about exact the same idea plus nice example code for both - the native server and the midlet client.
Good work! Now I hope that someone picks up this code and starts an useful project from this with all that things possible with native code. (e.g. screen capture, IMEI access, file connection for phones without FileConnection API etc.)
Here are some links:
Extending the Reach of MIDlets: how MIDlets can access native services
Arvind Gupta's NAT framework
NewLC's EzBoot (for autostarting the native daemon)
