Fall 07: 3-1 Stork
Winter 08: 3-1 Kal
Summer 08: 0-3 fOrGG
Fall 08: Protoss season, no finals.
Winter 09: 3-2 fantasy
Summer 09: 3-0 Yarnc
Fall 09: 3-1 Flash
Spring 10: 0-3 Flash
The only player with a similar streak is Nada, who made it to finals 6 times in 8 seasons, but made dual finals twice for a total of 8 finals in 8 seasons.
Boxer and Savior made it to five straight finals, iloveoov to four, and Bisu to three.
Flash's two straight finals, even though they were both dual finals, are nothing compared to this. Don't call him bonjwa, yet.