As the title of the post exclaims, I've been using these encounter sheets for some time to help speed things up at the table, or at least organise my notes into a more concise readable state. I spend my normal prep time working out my monsters and their abilities - I put them onto this sheet and when needed I can use the page to run the combat, then forget about it.
I have an initiative tracker and space to jot down creatures HP values as they take damage as well as notes and other pertinent information, thus keeping all my notes on one page (as we all know space behind the screen is a commodity!)
Feel free to download, print and use as you will. Grab it here