I keep putting off doing anything on android because of java. I don't know java, and I don't really want to learn it. I suppose I will give in eventually, for android, but it will be grudgingly.
I understand Scala works fine for Android, too, which is much more attractive than working with Java.
I've always wondered how many apps there are on the Market using Scala - I've never heard of one and it would be interesting to try writing my next one in it.