Ashton Kutcher, the newest cast member of Two and a Half Men, recently promoted tech startups via laptop stickers, including Chegg, Hipmunk and Flipboard -- three startups he invests in -- on the sitcom [h/t Dennis Crowley].
Kutcher is also an investor in LikeALittle, Airbnb, Milk and more. See his CrunchBase profile here.