The coolest thing I've found is this awesome excel spreadsheet. You plug in your start date and it tells you when your workouts are and calculates more things than I could possibly tell you. I'm so sorry, I have no idea who created it.
Also, I spent so long trying to find the best calculator to calculate calories burned from my kinda basic heart rate monitor, and I just realized there's one ON the Beachbody site - duh me! (As a note on the HRM, it's fine, but the strap feels like it might tear soon and I think I'd like more functions on it.)
The previously mentioned diet worksheets.
That's all I can think of right now but I'm sure they're more - I'll update this post as I think of some!
ETA: I left out the two calculators I found to change my heart rate monitor info to calories burned! I found two and I take the average of the numbers I get to determine my calories burned.