Product review (5 stars): No problems
You put water in, you freeze it.  Done.  I saw a lot of reviews about getting film on their ice cubes, or having difficulty getting them out.  These people are girly men.  All of my ice cubes have looked like, ice cubes.  How do I know this? I've been using ice cubes for years now.  To get them out, just push on the bottom and pull on the side, no problems.

The cubes themselves are pretty big so make sure you have a large enough glass, or just fill them up halfway for smaller cubes.