We have a diverse international site here so I'm sure we're going to get some different answers
For myself I really only have two choices, '99 and '08, so I'm going with '08. It was great to see the Americans end the streak of three successive victories for Team Europe, and USA won without Tiger. I think Azinger had a good strategy with his pods system and surprised no one else has copied it. A lot of great matches that were close with some clutch shots and putts made by Team USA.
The last meeting between the two teams was exciting as well, coming down to the last match where Graeme McDowell beat Hunter Mahan.