One of the most annoying things about multitasking is trying to find the program you need exactly when you need it. If you have a ton of programs open at once, this can get very frustrating. However, if you hold down the ALT key and press the Tab key, you can cycle through all your open programs. Once you get to the program you want to open, simply release the ALT key and that program will come to the front. Try it out, I’ve found it to be a great timesaver.