Emile Hirsch is reportedly headed to prison!

The 30-year-old actor has been sentenced to 15-days in jail after pleading guilty to misdemeanor assault.

The Into the Wild star is one of many celebrities who will have spent serious time behind bars (and no, we're not talking about Khloé Kardashian or Paris Hilton, who spent mere hours in a cell).

Click through to see 20 more stars who spent considerable time locked up.