- hard drives
- optical drives
- PCI cards
- eSATA cables
For me, this is ridiculously cool for several reasons. First, the site is broken down by Mac model so it's incredibly easy to find your computer among the models listed. Second, each video has three versions in order accommodate any bandwidth and monitor size. Third, each video is RATED by skill level, so if you aren't sure if you have the skills to do a particular job, they'll break it down for you.
Lastly - and this is a nice touch - each video give you a breakdown of the tools you'll need to do the job. Of course, if you happen to be missing the proper tools, OWC is VERY happy to sell you their own kit, but even that's awfully cheap.
This is a slam-dunk resource for any DIY'er.