The Big Bang Theory
Season 4 Episode 17 - The Toast Derivation
7.9 ?
2007
Comedy
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
Episodes in Season 4
1
The Robotic Manipulation
21 min
2
The Cruciferous Vegetable Amplification
21 min
3
The Zazzy Substitution
21 min
4
The Hot Troll Deviation
20 min
5
The Desperation Emanation
21 min
6
The Irish Pub Formulation
22 min
7
The Apology Insufficiency
21 min
8
The 21-Second Excitation
19 min
9
The Boyfriend Complexity
21 min
10
The Alien Parasite Hypothesis
20 min
11
The Justice League Recombination
20 min
12
The Bus Pants Utilization
21 min
13
The Love Car Displacement
21 min
14
The Thespian Catalyst
21 min
15
The Benefactor Factor
20 min
16
The Cohabitation Formulation
20 min
17
The Toast Derivation
21 min
NOW PLAYING
18
The Prestidigitation Approximation
21 min
19
The Zarnecki Incursion
21 min
20
The Herb Garden Germination
21 min
21
The Agreement Dissection
21 min
22
The Wildebeest Implementation
21 min
23
The Engagement Reaction
20 min
24
The Roommate Transmogrification
21 min
