If you were so inclined, you could hack your PS3 right now to allow you to play games from the HDD or install homebrew software that you might want. The catch is that most of those hacking solutions involve opening up the case and voiding your warranty. That can be a big hassle for a lot of gamers.
A company called PS Jailbreak has announced a new hacking solution that doesn't require you to open up your PS3 or add any chips to the machine. It will work with the old fat PS3 and the new PS3 Slim as well. The device is a USB flash drive that you plug into the PS3. Once plugged in a GUI launches and walks you through the setup of the software.
Once you apply the software, you can store games to your HDD and play them just like you would on a disc. The hack also allows you to run and install homebrew software from any USB drive. Since the jailbreak tool is all software, you warrant remains intact in case you ever have a problem with your console the manufacturer's site is having issues today and has been down repeatedly. Pricing is unknown at this time.