Teaching myself C, because I will need it for my day job (I'm a software engineer, but mostly work in Perl right now) and because it will be useful for many things in the future. People in software who don't know C are like people in business who don't know English.

Writing a book on the Kinks Writing enough short stories to get a complete book of them out, and also in the process trying to get them published by SF zines. These two both because I have a long-term aim of making enough money from writing that I can devote more of my time to doing interesting stuff instead of working a job.

Assisting with a political campaign in the local elections. Aim is to slowly build a saner society -- I think we need fundamental changes to the political institutions in the UK, and support for the party in question will, long-term, lead to the probability of those changes increasing.

Teaching myself decision theory. I am on record as saying that I think Eliezer's/the SIAI's analysis of AI risks is wrong, but I think it's a non-zero probability of being right. I think that if it does turn out to be right, the most useful thing I could do would be to contribute to some of the open decision theory problems, and that this would be useful even in the much more likely case that they're mistaken.