I had the idea to create an action for DvrmsToolbox that would automatically create a manual recording after missing one of the penalty shootout in the last world cup.  I didn't have time back then (who has time with all that soccer to watch:)); and I forgot afterwards.

I was listening to the latest Media Center Show and someone had sent a note in to Ian asking if MCE did this, or if there were any programs out there that would.  I'm not aware of anything that does this, and it seems like something that DTb should do; and now it does. 

Those with Early Access can download the ExtendRecording action here (it will be included in the next rev for those who don't). 

To use it, create a new profile with the actions you want.  As a sample, here's a screen shot of the one I created for the World Series.

Then create a PC.

Make sure to order it above "Every File", and you're all set.

UPDATE:
I wrote some additional actions to use with ExtendRecording.  They are included in the download for convert with ffdshow.