What to do with my brother while babysitting?

He's 8 and I'm babysitting him from 5-9:30 and i dunno, I just wanna make it extra fun. We have root beer and pizza and party mix and I was thinking we could watch his favourite star wars episode (episode I. Yea, I know, but he's 8. he'll learn) But I need some more suggestions on stuff to do. Any ideas?