Sezon 4
Bölümler
1 Jacob Two-Two and the Boggie Beastie 13 Mar 2005 
2 Jacob Two-Two and the Crumbling Cookie Catastrophe 
3 Jacob Two-Two's Broadcast Bungle 
4 Jacob Two-Two and the Cranial Classroom Caper 
5 Jacob Two-Two and the Wicked Glitch 
6 Jacob Two-Two and the Big Brain Exchange 
7 Jacob Two-Two and the Teacher's Pet 
8 Jacob Two-Two and the Valentine's Day Disaster 
9 Jacob Two-Two and the Molecular Mayhem 
10 Jacob Two-Two and the Puzzling Portable 
11 Jacob Two-Two and the Priceless Puck 
12 Jacob Two-Two and the Mata Hari Hamster 
13 Jacob Two-Two and the Halloween Hullabaloo 
14 Jacob Two-Two and the Wooden Nickel Knuckleheads