Yeah, the only one that can be characterized as such with any justification at all is 2000.
The liberals who cry about 2004 (not that there are many hear, but I remember reading about quite a few objections from House Democrats to the OH result) are absolute clowns. Bush won that fair and square. Of course, there's a good chance he wouldn't have been president in the first place and it'd be President Gore winning reelection if SCOTUS hadn't interfered to handpick their choice, but that's another story...
Bush for sure won Ohio but the same techniques used in Florida in 2000 to supress black turnout was used there so did he win yes by over 100,000 votes I dont believe that totally. the 537 margin and SC shenanagins would not exist had dems fought to ensure black voters were not kicked off the rolls as former felons.