Examples of apps in the Mac App Store not made with objective-c/c/c++? Are there any apps in the store made using mono, ruby or lisp or put together in another alternative way. 

Do you know of any?

The reason I'm asking is because I'm already making apps using cocoa/objective-c, and I really love ruby and obscure languages.
It looks like Briquette is written in MacRuby and made it into the MAS, so it looks like there is at least one alternative to Objective-C for MAS apps.