Simplify the following text for a Grade 7 native English-speaking person.
Original: Hilton has also guest-starred in episodes of the popular TV-show The O.C. , The George Lopez Show , Las Vegas , American Dreams , Dogg After Dark , and Veronica Mars .
Simplified: Hilton has also played guest roles , in episodes of The O.C. , The George Lopez Show , Las Vegas , American Dreams , Dogg After Dark , and Veronica Mars .