Agedu is a great tool, as it doesn't only show you where the data is, but also how long ago it was last accessed. It's a bit sad that the tool is not as straight forward to use as it could be. But here's a guide.
Basically you first call agedu -s <somedir>, then agedu -w to start a webserver and then look at the webpage that the latter command tell you about.
Suspending to RAM is allows the system to quickly wake up. But Suspend to Disk allows the system to completely power off, saving more power. That's why I've written a small script for modern Linux systems, which wakes up the system from S3 (memory sleep) and puts it into S5 (hibernation) mode. Also, it prevents you from losing data, because eventually your system's battery will run out.
The easiest option is with transcode:
transcode -J stabilize -i MVI_1234.MOV && \
transcode -J transform -i MVI_1234.MOV -y xvid4 -o stable.mp4
But the version that comes with precise is not very good, so here's a backported version that works better: