NBC was banking on The West Wing being evergreen - too self absorbed to see the eventual distaste a portion of the audience would develop due to the show's preachy nature and the unhinged personality of its anchor star. CSI has less potential for that kind of destruction but if it ever "comes on the market", the bidding war could tear it inside-out...CBS will pay a king's ransom to keep it, ABC and NBC will bid it way up to hurt CBS. For the Eye to be dependent on only a handful of shows indicates how precarious the network's status is.