With this app (and the program installed on your computer) You can take over your (or a friend's) computer from anywhere, fix a problem. I have lost count of how many times I have used this, and it's FREE (for personal use)
Control your home computer on the go. I have it on all my devices but the Android one is the most useful one. Try installing it on your work computer and you'll never find yourself looking for that missing file on a USB flash drive.