2007/8 must be the greatest acting winners’ lineup in recent history?

All 4 performances rank among cinema’s all-time best, with each starring in films which have aged exceptionally well. I have a feeling people will look back at 2007 as one of cinema's greatest years in general - these four's films + Juno, Diving Bell and the Butterfly, Ratatouille, Atonement, Eastern Promises, Away from Her, Into the Wild, Persepolis, Once, Bourne Ultimatum...

2003/4 was also a great acting winners' year. What other years had 4 fabulous winners? Older suggestions encouraged!