I don't like garlic crushers because they waste a lot of it and they are a massive faff to clean. (the tin opener shaped ones with the little holes.)
Chopping it doesn't release as much flavour as crushing it.
An Italian friend has a knack of how to crush it with the flat of a knife but I can't quite do this without it sliding about and/or not squashing well. I use a table knife so as not to cut myself and then chop the slightly squashed garlic with a vegetable knife.
Should have really worked out a better way years ago. are there any other methods people use?