10. Timothy Hutton
It still boggles the mind that Timothy Hutton scooped up a Best Supporting Actor Oscar for his turn in Ordinary People - becoming the youngest winner of the award in history - beating out Joe Pesci's immortal turn in Scorsese's astounding Raging Bull. While the performance, like most on this list, is far from bad, it's just not Oscar worthy, compounded by the fact that Hutton never returned to the same level of prestige, and three decades later, is stuck working in daft heist TV show, Leverage. It's probably what he's best known for these days, but all it does is remind us that Hutton certainly has that "flash in the pan" quality; his stilted, unfussed work on Leverage is sad proof that Hutton really wasn't ever that good an actor, and simply appealed to the Academy's fanciful sensibilities that year. It's a shame as most surely expected he would only improve after this glory. Rather, it seems he peaked too early...