<s>
The	O
American	O
television	O
sitcom	O
The	O
Big	O
Bang	O
Theory	O
,	O
created	O
and	O
executive	O
produced	O
by	O
Chuck	O
Lorre	O
and	O
Bill	O
Prady	O
,	O
premiered	O
on	O
CBS	O
on	O
September	O
24	O
,	O
2007	O
,	O
while	O
the	O
American	O
comedy	O
spin-off	O
prequel	B-Application
television	O
series	O
Young	O
Sheldon	O
,	O
created	O
and	O
executive	O
produced	O
by	O
Lorre	O
alongside	O
Jim	O
Parsons	O
and	O
Steven	O
Molaro	O
,	O
premiered	O
on	O
CBS	O
on	O
September	O
25	O
,	O
2017	O
.	O
</s>
<s>
Young	O
Sheldon	O
initially	O
centers	O
on	O
Sheldon	O
Cooper	O
at	O
the	O
age	O
of	O
nine	O
,	O
going	O
to	O
high	O
school	O
and	O
living	O
with	O
his	O
family	O
in	O
the	O
fictional	O
town	O
of	O
Medford	O
,	O
East	O
Texas	O
,	O
Sheldon	O
's	O
mother	O
,	O
Mary	O
;	O
his	O
father	O
and	O
the	O
head	O
football	B-Application
coach	O
at	O
Medford	O
High	O
,	O
George	O
Sr.	O
;	O
his	O
twin	O
sister	O
,	O
Missy	O
;	O
his	O
older	O
brother	O
,	O
George	O
Jr.	O
;	O
and	O
his	O
grandmother	O
,	O
Constance	O
"	O
Connie	O
"	O
Tucker	O
,	O
also	O
known	O
as	O
"	O
Meemaw	O
"	O
.	O
</s>
<s>
He	O
has	O
a	O
particular	O
affinity	O
for	O
Spock	B-Language
from	O
the	O
Star	B-Operating_System
Trek	I-Operating_System
franchise	O
.	O
</s>
<s>
Penny	O
makes	O
a	O
brief	O
non-speaking	O
cameo	O
as	O
a	O
child	O
in	O
the	O
Season	O
2	O
finale	O
of	O
Young	O
Sheldon	O
,	O
she	O
was	O
portrayed	O
by	O
Quinn	B-Application
Aune	O
as	O
a	O
child	O
.	O
</s>
<s>
Raj	O
is	O
a	O
Hindu	O
and	O
believes	O
in	O
karma	B-Application
(	O
reincarnation	O
)	O
,	O
but	O
eats	O
beef	O
.	O
</s>
<s>
Early	O
on	O
,	O
Amy	O
is	O
essentially	O
a	O
female	O
counterpart	O
to	O
Sheldon	O
,	O
but	O
later	O
on	O
,	O
she	O
begins	O
a	O
campaign	O
to	O
increase	O
Sheldon	O
's	O
feelings	O
for	O
her	O
by	O
becoming	O
more	O
involved	O
in	O
his	O
interests	O
,	O
including	O
video	O
games	O
and	O
Star	B-Operating_System
Trek	I-Operating_System
,	O
and	O
treating	O
him	O
as	O
his	O
mother	O
did	O
.	O
</s>
<s>
In	O
this	O
series	O
,	O
the	O
origins	O
of	O
his	O
interests	O
in	O
the	O
sciences	O
,	O
engineering	O
,	O
computers	O
,	O
trains	O
,	O
comic	O
books	O
,	O
and	O
science	O
fiction	O
(	O
especially	O
the	O
character	O
Spock	B-Language
from	O
Star	B-Operating_System
Trek	I-Operating_System
)	O
are	O
revealed	O
.	O
</s>
<s>
Mary	O
Cooper	O
(	O
née	O
Tucker	O
)	O
(	O
portrayed	O
by	O
Laurie	O
Metcalf	O
in	O
The	O
Big	O
Bang	O
Theory	O
;	O
recurring	O
:	O
seasons	O
7	O
&	O
9-12	O
;	O
guest	O
:	O
seasons	O
1	O
&	O
3-5	O
and	O
by	O
Zoe	B-Application
Perry	O
in	O
Young	O
Sheldon	O
;	O
seasons	O
1-present	O
)	O
is	O
Sheldon	O
's	O
loving	O
and	O
deeply	O
religious	O
mother	O
from	O
Texas	O
.	O
</s>
<s>
A	O
younger	O
version	O
of	O
Mary	O
,	O
played	O
by	O
Zoe	B-Application
Perry	O
,	O
is	O
a	O
main	O
character	O
in	O
the	O
prequel	B-Application
series	O
Young	O
Sheldon	O
.	O
</s>
<s>
George	O
works	O
as	O
a	O
football	B-Application
coach	O
.	O
</s>
<s>
Kripke	O
has	O
a	O
case	O
of	O
rhotacism	O
in	O
which	O
he	O
pronounces	O
the	O
letters	O
"	O
R	O
"	O
and	O
"	O
L	O
"	O
as	O
"	O
W	O
"	O
in	O
much	O
the	O
same	O
way	O
as	O
Elmer	O
Fudd	O
from	O
Looney	B-Application
Tunes	I-Application
,	O
Jimmy	O
Five	O
from	O
Monica	O
's	O
Gang	O
and	O
Gilda	O
Radner	O
in	O
her	O
"	O
Baba	O
Wawa	O
"	O
sketches	O
.	O
</s>
<s>
He	O
made	O
various	O
other	O
appearances	O
,	O
including	O
forming	O
a	O
band	O
with	O
Raj	O
and	O
Howard	O
in	O
which	O
he	O
sang	O
a	O
song	O
from	O
the	O
point	O
of	O
view	O
of	O
the	O
boulder	O
seen	O
near	O
the	O
beginning	O
of	O
the	O
movie	O
Raiders	B-Application
of	I-Application
the	I-Application
Lost	I-Application
Ark	I-Application
.	O
</s>
<s>
Wil	O
played	O
Wesley	O
Crusher	O
in	O
Star	B-Application
Trek	I-Application
:	I-Application
The	I-Application
Next	I-Application
Generation	I-Application
,	O
a	O
character	O
that	O
Sheldon	O
idolized	O
as	O
a	O
child	O
.	O
</s>
<s>
Wil	O
Wheaton	O
,	O
LeVar	O
Burton	O
,	O
Leonard	O
Nimoy	O
(	O
in	O
voice-over	O
only	O
)	O
,	O
Brent	O
Spiner	O
,	O
William	O
Shatner	O
and	O
George	O
Takei	O
have	O
all	O
appeared	O
on	O
the	O
show	O
,	O
making	O
the	O
Star	B-Operating_System
Trek	I-Operating_System
franchise	O
the	O
most	O
represented	O
franchise	O
on	O
the	O
show	O
in	O
terms	O
of	O
guest	O
appearances	O
.	O
</s>
<s>
The	O
character	O
is	O
not	O
shown	O
on-screen	O
with	O
only	O
two	O
exceptions	O
:	O
firstly	O
in	O
one	O
episode	O
in	O
season	O
six	O
where	O
her	O
body	O
but	O
not	O
her	O
face	O
is	O
briefly	O
shown	O
,	O
and	O
secondly	O
in	O
the	O
Season	O
5	O
finale	O
where	O
she	O
can	O
be	O
seen	O
(	O
albeit	O
very	O
small	O
)	O
in	O
the	O
Google	B-Application
Earth	I-Application
satellite	O
picture	O
taken	O
during	O
Howard	O
and	O
Bernadette	O
's	O
wedding	O
.	O
</s>
<s>
Cheryl	O
is	O
the	O
very	O
talkative	O
,	O
short-haired	O
brunette	O
dressed	O
as	O
a	O
ladybug	B-Application
,	O
who	O
shows	O
interest	O
in	O
Raj	O
.	O
</s>
<s>
In	O
the	O
prequel	B-Application
series	O
,	O
Young	O
Sheldon	O
,	O
and	O
in	O
"	O
The	O
VCR	O
Illumination	O
"	O
,	O
Barber	O
plays	O
Sheldon	O
's	O
father	O
,	O
George	O
Cooper	O
,	O
Sr.	O
</s>
