Celebrity: Jeremy Renner
Second job: House-flipper
The deets: While the twice Oscar-nominated Renner has sailed to the top of every casting director's list in the past several years, he still has another significant source of income from a second job that might just rival the ducats he's made from film. According to the Hollywood Reporter, Renner and a business partner have had considerable success flipping houses, from a 2002 three-bedroom they bought for $659,000 and sold less than one year later for $900,000, to the 1924 Greek Revival estate they bought in 2008 for $1.55 million and sold a year later for more than $4 million.