Groovy and Grails

Groovy and Grails - Java | SpringSource:

"The combination of Groovy and Grails offers productivity benefits rivaling Ruby on Rails, but on the proven, scalable, and seamlessly integrated Java platform."

Groovy

When I get a break from my current plunge into C#, Windows Forms Data Binding, and SQL Server I want to dig into Groovy. I was considering checking out Scala which is also a language that runs on a Java Virtual Machine. Groovy just sounds more... (what's the word I'm looking for?)