Instead of writing a Windows service for a server process that needed to run constantly one of our "architects" wrote a console app and used the task scheduler to run it every 60 seconds.
Keep in mind this is in .NET where services are very easy to create.
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Also, at the same place a console app was used to host a .NET remoting service, so they had to start the console app and lock a session to keep it running every time the server was rebooted.
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At the last place I worked one of the architects had a single C# source code file with over 100 classes that was something like 250K in size.
