Some recent investments:

Tesla Motors (nasdaq: TSLA) - pioneering electric vehicles, drivetrains, and technology

Location Labs - building mighty location services; acquired by AVG

Hootsuite - social media dashboard/analytics

The Kitchen -- Community Bistro

Yammer -- the enterprise social network, acquired by Microsoft

SpaceX -- redefining space exploration technology

Porch -- find fantastic home professionals

Postmates -- everyone's favorite delivery service

Twitter -- instantly connect to whats important to you

Sendwave -- send money to Kenya with love

BitGo -- Bitcoin for friends

PlayPineapple -- solitaire with friends