For the users of iPhones on the forum there are a couple of useful programs that you can upload for use in your daily training exercise.
I like this one a lot because it's FREE!
Cycorder Free video recorder by Saurik
This program is free and available through the Cydia installer. It turns your camera into a video recorder and you can use it to video tape yourself doing kata or fighting. Video helps to see yourself and possibly catch some mistakes or improve on different things. No sound though... will upload a video sample of it shortly.
Example:
Just saying "hello" to the punching bag in our student gymnasium before class starts and trying out program.
Round Timer
This program has a round timer and cool down timer. Good for bag work practice, kumite, etc. My only qualm is that the round buzzer is too quiet. I believe this can be found in apple app store.