I've actually written small projects in all of them. The one that excited me the most was Ruby (and outside of scripting, golang). Ruby seems clean and small, which I like. But I also question the long term prospects of various languages. There seems to have been an explosion of languages in the last few years and I wonder how many will survive long term. Then I'm possibly just spoiled by C and C++, which just seem to maintain a (relatively) mainstream status.