I couldn't! United We Stand gives a great flavor for the atmosphere among proper hardcore fans at games. Football Weekly is probably the best discussion-based show there, from the Guardian, usually quite amusing. The Big Interview has some fascinating episodes with e.g. Gary Neville, Carrick, Fletcher and other non-United figures in the game. Kind of depends what you want. Second Captains is very entertaining and I do love me an Irish accent for listening pleasure.