Hide a C# program from the task manager?

Question

Is there any way to hide a C# program from the Windows Task Manager?

EDIT: Thanks for the overwhelming response! Well I didn't intend to do something spooky. Just wanted to win a bet with my friend that I can do it without him noticing. And I'm not a geek myself to be able to write a rootkit, as someone suggested though I'd love to know how to do it.

Answer 1

Not that I'm aware of - and there shouldn't be. The point of the task manager is to allow users to examine processes etc.

If the user should be able to do that, they should be able to find your program. If they shouldn't be poking around in Task Manager, group policy should prevent that - not your program.