diff --git a/bin/lambra b/bin/lambra
index a40a298..c401e5a 100755
--- a/bin/lambra
+++ b/bin/lambra
@@ -37,8 +37,13 @@ end
 display = proc do |file, code, ev=true, binding=nil|
   begin
     if settings[:ast]
-      ast = Lambra::Parser.parse_file(file)
-      info.call(:ast, 'AST') { Rubinius::AST::AsciiGrapher.new(ast).print }
+      ast = if file == '(eval)'
+        Lambra::Parser.parse_string(code)
+      else
+        Lambra::Parser.parse_file(file)
+      end
+
+      info.call(:ast, 'AST') { RBX::AST::AsciiGrapher.new(ast).print }
     end
 
     info.call(:bc, "Bytecode") { puts Lambra::Compiler.compile_string(code, file).decode }
diff --git a/lib/lambra/bytecode_compiler.rb b/lib/lambra/bytecode_compiler.rb
index a23a376..605e513 100644
--- a/lib/lambra/bytecode_compiler.rb
+++ b/lib/lambra/bytecode_compiler.rb
@@ -43,6 +43,10 @@ def visit_EvalExpression(o)
       o.body.accept(self)
     end
 
+    def visit_Script(o)
+      o.body.accept(self)
+    end
+
     def visit_List(o)
       set_line(o)
       return g.push_nil if o.elements.count.zero?
diff --git a/spec/compiler_spec.rb b/spec/compiler_spec.rb
index 711280e..6ff1a6a 100644
--- a/spec/compiler_spec.rb
+++ b/spec/compiler_spec.rb
@@ -31,4 +31,10 @@
       '(let [x 2 y 3] (* x y))'.should eval_to 6
     end
   end
+
+  describe 'spawn' do
+    it 'spawns a new process' do
+      '(spawn (fn [] (sleep 10)))'.should eval_to_kind_of(Integer)
+    end
+  end
 end