Haskell and the Cocoa Touch framework (sadly, not yet in conjunction). Haskell isn't really new, but it still is the best programming language I've worked with

Haskell and the Cocoa Touch framework (sadly, not yet in conjunction). Haskell isn't really new, but it still is the best programming language I've worked with (yes, "best" is personal in this case). I don't think any other language allows me to write programs that are more concise. The other thing that 2009 brought me was iPhone Development. Although I don't like Objective-C that much, the Cocoa Touch framework is excellent. Once you get a grip on it and on the design patterns your code tends to get very small, too. With both these technologies I shared the same experience: at the start they look incomprehensible and working with them made me less productive. However, only after really learning them I started to full appreciate all the things.