Couple of things some of you might find useful.
First up, CHDK (via Bonus). You can use this to unlock more features on certain Canon cameras. The most useful is probably the ability to shoot pictures in RAW format rather than the compressed jpeg. I’ve not yet managed to get it on my camera to see if it works tho (you need a good way of copying files over to the camera memory card).
Second is get_iplayer. This program allows you to connect to the BBC streaming servers and copy down whatever programs are currently being offered on the iPlayer. You can even watch whilst you copy (apparently). Probably useful if you want to get some programs for viewing on portable players for holidays and the like. It’s command line based so not something you can use without a little reading first.