C.K. Barrett passed away at the end of August. I was fortunate enough to hear him lecture and to interact with him on a (very) few occasions while I was a student at Durham. Not everyone was so lucky.
But now you can listen to a selection of lectures given by Barrett that are part of Asbury Seminary's chapel archive. Seventeen lectures are available dating from 1978 to 1998 and include topics on Pauline theology, Acts and a bit of gospel material. You can download them for use on your MP3 player.