Keep an eye on the Radio 4 group on flickr (there's an RSS feed). Stuff like this shows up regularly. On Saturday at the recording of the evening's Loose Ends, Stan Was took some pictures of the Maccabees. In the Radio 4 group you'll also find some lovely individual pics, like this one (also taken by Stan) of Sir David Attenborough in the studio for an interview, and these pics taken by me in the Today control room last week.