I'd like to put in a shout for Trond Egil Soltvedt. Was never a glamorous footballer, and I remember when Rob Gurney (unfairly in my opinion) gave him the moniker of 'Trundler'. Always stuck rigidly to his task in midfield.
However, I remember the day we sold him to Southampton was the same day we sold Huckerby to Leeds United, and more people phoned in to express disappointment at him going than Huckerby's sale.
Also agree with the shout for Carlton Palmer, his arrival allowed MacAllister to (finally) thrive in a Sky Blue shirt.