Though the Microwave is obviously capable of some overtly digital sounds, I think it's a good source of analog sounds too. This one has the Curtis CEM3389, which sounds very warm to my ears. You can make the Microwave sound nasty and dirty, clangy and resonant, but I also think it's very gentle and expressive. I thought I'd upload this demo I made of some of the prettier sounds it can make.
Basically I went through patch after patch, improvising something if I liked the sound, maybe tweaked the envelopes or filter, recorded it and then moved on to another patch. So, no I haven't programmed any of these sounds myself, they are all from the commercial soundsets that were released in the past, and which are usually still available on eBay, which is where I bought them. There's some EQ rolling off the bass at around 30Hz and some reverb to put the sound in some space, but everything else is the Microwave.
Oh, and yes, I know this is kind of boring... it's intended for those who are curious about the Microwave's sound and hadn't heard this gentler side of it.