Ashton Kutcher Sneaks In Promotion for Foursquare, Hipmunk in Two and a Half Men

Ashton Kutcher may be best known to most people as the star of That '70s Show, Dude, Where's My Car?, or as Demi Moore's husband. More recently, he landed a big part in the hit show Two and a Half Men.

But in the tech world he's best known as a prolific angel investor. So far, he's invested in some of the hottest startups out there, Foursquare and Airbnb probably being the best known.

In the latest episode of Two and a Half Men, where Kutcher plays an internet billionaire who sold his company to Microsoft, his laptop is plastered with stickers from startups, several of which he's an investor in.

Stickers for Foursquare, GroupMe, Hipmunk, Chegg and Flipboard are visible. Kutcher has invested in Foursquare, Hipmunk and Flipboard.

Initially, he said that CBS, who produces the show, didn't approve of him pitching companies that were not paying promoters, but it seems that the TV network let it slide this time.