Using a French press is a better way of making coffee at home, but clean-up can be a bit awkward. The Coffee Catcher makes it easier to remove your grounds and also acts as a second filter for smoother brews.
Using the traditional technique, you grind your beans, drop your grinds into the press, add hot water, then press down gently to release the beans' flavour into the liquid. By adding the Coffee Catcher disc to the bottom of your press before adding anything else, removing the coffee after the brew doesn't require tricky sink manoeuvres or spoon-scraping — you just reach down with the hook and pull the "puck" of spent grounds out in one move. The disc also acts as a secondary filter on the bottom, preventing the rougher essence of the beans from seeping out through the bottom into your otherwise perfect cup.
Here's a video the Coffee Catcher makers use to show the difference between standard French press operation and their own technique. It's not exactly scientific, but somewhat explanatory:
The Coffee Catcher isn't perfectly cheap for what it does — $15.95 for 2-3 cup presses, then up to $US21.95 for a 12-cup model — but it is something worth adding to your wish list if you're a French press fiend.