How can I parse a date including timezone with Joda Time

OK, further Googling gave me the answer to my own question: use withOffsetParsed(), as so:

final DateTimeFormatter df = DateTimeFormat
        .forPattern("EEE MMM dd HH:mm:ss 'GMT'Z yyyy");
final DateTime dateTime = df.withOffsetParsed()
        .parseDateTime("Mon Aug 24 12:36:46 GMT+1000 2009");

This works.