Index: app/views/issues/show.rhtml
===================================================================
--- app/views/issues/show.rhtml	(revision 3917)
+++ app/views/issues/show.rhtml	(working copy)
@@ -113,14 +113,21 @@
 <% html_title "#{@issue.tracker.name} ##{@issue.id}: #{@issue.subject}" %>
 
 <% content_for :sidebar do %>
+
+  <%= call_hook(:view_issues_show_sidebar_top, :issue => @issue) %>
+
   <%= render :partial => 'issues/sidebar' %>
 
+  <%= call_hook(:view_issues_show_sidebar_before_watchers, :issue => @issue) %>
+
   <% if User.current.allowed_to?(:add_issue_watchers, @project) ||
     (@issue.watchers.present? && User.current.allowed_to?(:view_issue_watchers, @project)) %>
     <div id="watchers">
       <%= render :partial => 'watchers/watchers', :locals => {:watched => @issue} %>
     </div>
   <% end %>
+
+  <%= call_hook(:view_issues_show_sidebar_bottom, :issue => @issue) %>
 <% end %>
 
 <% content_for :header_tags do %>