~/NetBeansProjects/rubinius $ shotgun/rubinius ../jruby/test/bench/bench_eval.rb 
implicit binding
26.4211101531982
c = 0
explicit binding
25.9329280853271
c = 0
~/NetBeansProjects/rubinius $ ruby ../jruby/test/bench/bench_eval.rb 
implicit binding
0.449023008346558
c = 0
explicit binding
0.44777512550354
c = 0