Dragon Ball Z is an entire season that moves from conflict to conflict. It's better to section off these into different parts to avoid confusion. Also, you don't want to search the entire page for episode 276, when the first episode listed is episode 1. Here are is the episode guide:

• The Saiyan Saga
• The Frieza Saga
• Garlic Jr. Saga
• The Android Saga
• The Cell Saga
• The Anoyoichi Budokai
• High School for Son Gohan
• The 25^th Tenkaichi Budokai
• Majin Buu Saga
• The 28^th Tenkaichi Budokai