Have you seen the Debian's Computer Language Benchmarks Game? It is a nice site that aims to compare different programming languages (implementations). Currently it compares more than 30 compilers and interpreters, including C, C++, Python, Java, PHP, Ruby, Lua, Haskell, Perl or Tcl.

I expected something similar of what the default benchmark shows. It runs all the test programs in all the languages in order to generate a general language overview: C++ is the champion, C is in the second position, Java 6: 10th, FreeBasic: 13th, Ada95 GNAT: 14th, C# Mono: 18th, followed by JavaScript SpiderMonkey in the 31st position.

Try to compare a couple of languages, it's kind of interesting. :-)