diff --git a/Gemfile b/Gemfile
index 2ed39890..dbe59003 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,6 +6,7 @@ gem   'gorillib',    ">= 0.4",  :github => 'infochimps-labs/gorillib', :branch =
 gem   'multi_json',  ">= 1.1"
 
 gem   'extlib'
+gem   'right_aws'
 gem   'addressable'
 gem   'htmlentities'
 gem   'home_run',               :platform => [:ruby], :require=>'date'
diff --git a/lib/wukong/script/emr_command.rb b/lib/wukong/script/emr_command.rb
index b07d8ee5..396c6e61 100644
--- a/lib/wukong/script/emr_command.rb
+++ b/lib/wukong/script/emr_command.rb
@@ -9,8 +9,9 @@
 Settings.define :emr_runner,           :description => 'Path to the elastic-mapreduce command (~ etc will be expanded)'
 Settings.define :emr_root,             :description => 'S3 bucket and path to use as the base for Elastic MapReduce storage, organized by job name'
 Settings.define :emr_data_root,        :description => 'Optional '
+Settings.define :emr_region,           :description => 'Optional. Which EMR region to run the job. Defaults to US East (Virginia)'
 Settings.define :emr_bootstrap_script, :description => 'Bootstrap actions for Elastic Map Reduce machine provisioning', :default => EMR_CONFIG_DIR+'/emr_bootstrap.sh', :type => :filename, :finally => lambda{ Settings.emr_bootstrap_script = File.expand_path(Settings.emr_bootstrap_script) }
-Settings.define :emr_extra_args,       :description => 'kludge: allows you to stuff extra args into the elastic-mapreduce invocation', :type => Array, :wukong => true
+Settings.define :emr_extra_args,       :description => 'kludge: allows you to stuff extra args into the elastic-mapreduce invocation', :wukong => true
 Settings.define :alive,                :description => 'Whether to keep machine running after job invocation', :type => :boolean
 #
 Settings.define :key_pair_file,        :description => 'AWS Key pair file',                               :type => :filename
@@ -69,11 +70,12 @@ def execute_emr_runner
         "--stream",
         "--mapper=#{mapper_s3_uri} ",
         "--reducer=#{reducer_s3_uri} ",
-        "--input=#{input_paths.join(",")} --output=#{output_path}",
+        "--input=#{input_paths.join(",")} --output=#{output_path}"
       ]
       # eg to specify zero reducers:
       # Settings[:emr_extra_args] = "--arg '-D mapred.reduce.tasks=0'"
-      command_args += Settings[:emr_extra_args] unless Settings[:emr_extra_args].blank?
+      command_args << "--region #{Settings[:emr_region]}" unless Settings[:emr_region].blank?
+      command_args << Settings[:emr_extra_args] unless Settings[:emr_extra_args].blank?
       command_args += hadoop_options_for_emr_runner
       Log.info 'Follow along at http://localhost:9000/job'
       execute_command!( File.expand_path(Settings.emr_runner), *command_args )
diff --git a/wukong.gemspec b/wukong.gemspec
index 71e005f8..47561ead 100644
--- a/wukong.gemspec
+++ b/wukong.gemspec
@@ -152,13 +152,10 @@ Gem::Specification.new do |s|
     "examples/pagerank/run_pagerank.sh",
     "examples/sample_records.rb",
     "examples/server_logs/apache_log_parser.rb",
-    "examples/server_logs/breadcrumb_edges.rb",
     "examples/server_logs/breadcrumbs.rb",
-    "examples/server_logs/histograms.rb",
     "examples/server_logs/logline.rb",
     "examples/server_logs/nook.rb",
     "examples/server_logs/nook/faraday_dummy_adapter.rb",
-    "examples/server_logs/page_counts.pig",
     "examples/server_logs/user_agent.rb",
     "examples/simple_word_count.rb",
     "examples/size.rb",
@@ -241,18 +238,10 @@ Gem::Specification.new do |s|
     "lib/wukong/streamer/summing_reducer.rb",
     "lib/wukong/streamer/uniq_by_last_reducer.rb",
     "lib/wukong/typed_struct.rb",
-    "notes/away/icss/icss_specification.textile",
-    "notes/away/swineherd/swineherd-old-readme.textile",
-    "notes/away/wukong-fs/wukong-fs-old-readme.textile",
-    "notes/away/wukong-transform/wukong-processor-old-readme.textile",
     "old/cassandra_streaming/berlitz_for_cassandra.textile",
     "old/cassandra_streaming/client_interface_notes.textile",
     "old/cassandra_streaming/client_schema.textile",
     "old/cassandra_streaming/tuning.textile",
-    "spec/data/a_atsigns_b.tsv",
-    "spec/data/a_follows_b.tsv",
-    "spec/data/tweet.tsv",
-    "spec/data/twitter_user.tsv",
     "spec/spec.opts",
     "spec/spec_helper.rb",
     "spec/wukong/encoding_spec.rb",
@@ -270,4 +259,6 @@ Gem::Specification.new do |s|
   s.add_dependency(%q<addressable>, [">= 0"])
   s.add_dependency(%q<htmlentities>, [">= 0"])
   s.add_dependency(%q<home_run>, [">= 0"])
+  s.add_dependency(%q<extlib>, [">= 0"])
+  s.add_dependency(%q<right_aws>, [">= 0"])
 end