I'd just like to note that membrane != rubber dome.
The Model M has a membrane, and is awesome.
Microwave ovens often have membrane, and make rubber dome look like the best keyboard ever in comparison. (Although, my microwave uses dials (and no, dials are not a kind of keyswitch, I mean things that you grab and twist instead of push - and no, it's not a 1960's microwave, I bought it brand new a year ago at Mao-Mart,) and a friend of mine specifically sought out a microwave with actual buttons instead of a membrane sheet.)