Yeah, our talk really shocked me when Nail was talking about how long his videos were with how small of a video file he was coming up with. In the past I have been using AVI format (DV Quality) and when I recorded a course replay of around 2-4 minutes I would end up with 500MB - 1GB size files.
Using the MPEG2 format to record, file size for a 1 minute clip was around 90MB, and when trimmed and exported, it was down to 85MB. Quality of the footage is basically as good as the AVI format, but much much smaller file size.
This will make storage space on your computer much more friendly, as well as making uploading times to YouTube much faster. Win/Win as far as I can see.

Here is the video I uploaded, it is actually probably the clearest video I've uploaded to-date. I'm really looking forward to new TXRD2 videos in this format.