Freeware to relax, Professional for money.
Doing iPhone. Done python, Symbian C++ and GEOS. Loved Texas Instrument TI-Avigo 10 PDA. Released a lot of freeware: DOS, GEOS, TI-Avigo, PyS60 for S60.
Done Social Networking, Utilities, Browsing, Messaging, Network modules. Some games. Lots of UI and middleware. Project management, writing specs, business development.