I'm sure someone already posted this even though my search turned up nothing.
My friend bought a Macbook and was annoyed that he couldn't access the task manager to end processes/terminate applications (something Windows users commonly do

) within Windows. I played around with it for a bit and discovered that you can right click on the start bar and click "Task Manager"
Of course you'll need an external mouse (unless someone figured out how to right click in Windows) for this, but that's much more feasible than an external keyboard

. I guess you could always use remapkey.exe to allow you to ctrl-alt-del, but this is a nice alternative as well.