There will be a discussion of encyclopedias, including, of course, Wikipedia, on the "You and Yours" programme on BBC Radio 4 tomorrow (Wednesday) afternoon.
The programme is on from approximately 12-1pm (UTC) and the Wikipedia part is expected to start about half way though.
There are details on the programme, though not specifically Wikipedia yet, at http://www.bbc.co.uk/radio4/youandyours/ and you can also listen to it via http://www.bbc.co.uk/radio/aod/radio4.shtml?fm
Angela.