diff --git a/lib/git_stats/core_extensions/hash.rb b/lib/git_stats/core_extensions/hash.rb
new file mode 100644
index 000000000..995fb370a
--- /dev/null
+++ b/lib/git_stats/core_extensions/hash.rb
@@ -0,0 +1,5 @@
+class Hash
+  def to_key_indexed_array
+    self.inject([]) { |acc, (k, v)| acc[k] = v; acc }
+  end
+end
\ No newline at end of file
diff --git a/lib/git_stats/git_data/blob.rb b/lib/git_stats/git_data/blob.rb
index 3e4f55254..d4b717290 100644
--- a/lib/git_stats/git_data/blob.rb
+++ b/lib/git_stats/git_data/blob.rb
@@ -8,7 +8,7 @@ module GitStats
       attr_reader :repo, :hash, :filename
 
       def lines_count
-        @lines ||= Command.new(repo, "git cat-file blob #{self.hash} | wc -l").run.to_i
+        @lines_count ||= Command.new(repo, "git cat-file blob #{self.hash} | wc -l").run.to_i
       end
 
       def content
diff --git a/lib/git_stats/git_data/commit.rb b/lib/git_stats/git_data/commit.rb
index 8b1a0c07b..7a4a85d7c 100644
--- a/lib/git_stats/git_data/commit.rb
+++ b/lib/git_stats/git_data/commit.rb
@@ -19,6 +19,10 @@ module GitStats
         @files_count ||= Command.new(repo, "git ls-tree -r --name-only #{self.hash} | wc -l").run.to_i
       end
 
+      def lines_count
+        @lines_count ||= files.map(&:lines_count).sum
+      end
+
       def short_stat
         @short_stat ||= ShortStat.new(self)
       end
diff --git a/lib/git_stats/stats_view/view.rb b/lib/git_stats/stats_view/view.rb
index 65b5c8bf7..f0a09ee14 100644
--- a/lib/git_stats/stats_view/view.rb
+++ b/lib/git_stats/stats_view/view.rb
@@ -17,7 +17,7 @@ module GitStats
       end
 
       def all_templates
-        @all_templates ||= (Dir["templates/*.haml"] - Dir["templates/layout.haml"]).map { |t| File.basename(t, ".haml") }
+        %w(index activity authors files)
       end
 
       def prepare_assets
diff --git a/lib/git_stats/stats_view/view_data.rb b/lib/git_stats/stats_view/view_data.rb
index 258423fcc..7ebbe0eba 100644
--- a/lib/git_stats/stats_view/view_data.rb
+++ b/lib/git_stats/stats_view/view_data.rb
@@ -27,11 +27,21 @@ module GitStats
               shadow: true
           )
           repo.authors.each do |email, author|
-            f.series(name: email, data: author.activity.by_wday.inject([]) { |acc, (k, v)| acc[k] = v; acc })
+            f.series(name: email, data: author.activity.by_wday.to_key_indexed_array)
           end
         end
       end
 
+      def by_hour
+        @by_hour ||= LazyHighCharts::HighChart.new('graph') do |f|
+          f.chart(type: "column")
+          f.title(text: "Commits")
+          f.xAxis(categories: (0..23))
+          f.yAxis(min: 0, title: {text: 'Commits'})
+          f.series(name: "commits", data: repo.activity.by_hour.to_key_indexed_array)
+        end
+      end
+
       def files_by_date
         @files_by_date ||= LazyHighCharts::HighChart.new('graph') do |f|
           f.title(text: "Files")
@@ -49,6 +59,24 @@ module GitStats
           )
         end
       end
+
+      def lines_by_date
+        @lines_by_date ||= LazyHighCharts::HighChart.new('graph') do |f|
+          f.title(text: "Files")
+          f.xAxis(type: "datetime")
+          f.yAxis(min: 0, title: {text: 'Commits'})
+          rcommits = repo.commits.reverse
+          f.series(
+              type: "area",
+              name: "commits",
+              pointInterval: 1.day * 1000,
+              pointStart: repo.commits.first.date.to_i * 1000,
+              data: repo.commits.first.date.midnight.upto((repo.commits.last.date + 1.day).midnight).map { |day|
+                rcommits.find { |c| c.date < day }.lines_count rescue 0
+              }
+          )
+        end
+      end
     end
   end
 end
\ No newline at end of file
diff --git a/templates/activity.haml b/templates/activity.haml
new file mode 100644
index 000000000..1463eacb3
--- /dev/null
+++ b/templates/activity.haml
@@ -0,0 +1 @@
+= high_chart("by_hour", by_hour)
\ No newline at end of file
diff --git a/templates/files.haml b/templates/files.haml
index 9c93e343b..ed5987c6a 100644
--- a/templates/files.haml
+++ b/templates/files.haml
@@ -1 +1,2 @@
-= high_chart("files_by_date", files_by_date)
\ No newline at end of file
+= high_chart("files_by_date", files_by_date)
+= high_chart("lines_by_date", lines_by_date)
\ No newline at end of file