You can do this to any process in Windows' Resource Monitor too - the one you can open from task manager. On the CPU tab you can right click any process and suspend it.
From Task Manager, open Resource Monitor. That's the one with green charts on the right hand side. It has different context menu than the Task Manager.
Picture (on windows 8): http://thewindowsclub.thewindowsclubco.netdna-cdn.com/wp-con...
I'm not sure if Windows 7 has it, though.
