<p>And by donut caching, I'm refering to <a href="http://weblogs.asp.net/scottgu/archive/2006/11/28/tip-trick-implement-donut-caching-with-the-asp-net-2-0-output-cache-substitution-feature.aspx" rel="nofollow noreferrer">Scott Guthrie's blog post</a> which is awesome.</p>

<p>Does anyone know if that works properly?</p>

Note that this technique no longer works as of MVC 2.0. Which sucks.