Other interesting BOINC tidbits...

The result is unparalleled processing muscle: IBM's BlueGene/L, now the most powerful supercomputer, cranks out about 70 trillion flops; meanwhile SETI@home conservatively runs off roughly 500,000 PCs at more than 100 trillion flops, says SETI@home director David P. Anderson.
In coming months BOINC partners will include FightAIDS@home, PlanetQuest and Orbit@home.