Language Details: Groovy

Groovy is an agile and dynamic language for the Java Virtual Machine.

Official website (see also: Wikipedia article)
Code Jam 2012 Contestants using Groovy
Qualification Round
Used in 71 solutions by 22 contestants:
Round 1A
Used in 6 solutions by 4 contestants:
Round 1B
Used in 8 solutions by 5 contestants:
Round 1C
Used in 8 solutions by 3 contestants:
Round 2
Used in 1 solutions by 1 contestants:

Submission Origin

United States (4 contestants)
Russia (3 contestants)
Brazil (2 contestants)
Japan (2 contestants)
Sweden (2 contestants)
Ukraine (2 contestants)
United Kingdom (2 contestants)
... (1 contestant)
Colombia (1 contestant)
Czech Republic (1 contestant)
France (1 contestant)
India (1 contestant)
Netherlands (1 contestant)
Norway (1 contestant)