For those who want to take things a bit further, in terms of coaching or personal performance, the CrossFit Level 1 Trainer Course is a great thing to do. You'll meet some great people, you'll have loads of fun and you'll learn a huge amount (and no you don't have to be a 'CrossFit Firebreather' to attend, it can be for absolutely anyone as long as you're willing to learn).
It's taking place at Reebok CrossFit Stockport, Manchester, UK on 28 and 29 Jan 2012. Follow the link to book your place.