gistfile1.aspx

<div class="editor-label">
    <%= Html.LabelFor(model => model.Authors) %>
</div>
<span id="authorChackboxes">
    <% List<Author> authors = ViewData["authors"] as List<Author>;
       foreach (Author author in authors)
       {
            string checkboxId = string.Format("author{0}", author.Id); %>                   
            <input type="checkbox"
                   id="<%= Html.Encode(checkboxId) %>"
                   name="authorIds" 
                   value="<%= Html.Encode(author.Id) %>" /> 
            <label for="<%= Html.Encode(checkboxId) %>"><%= Html.Encode(author.Name) %></label> <br />
    <% } %>
</span>