[jasonkester]

C#/ASP.NET/SQL Server, all out of the box, running database and web server on a single machine that would have been a middle of the road dev box 4 years ago.

That box is running about 20 sites, some big, some small, usually no more than one of them getting TechCrunched/Redditted at a time.

Here's a writeup of one particularly heavy day in the life of that box:

http://expatsoftware.com/articles/2008/03/6-million-hits-day...