Think about it. You have:
The Sopranos
Seinfeld
The Simpsons
The Sield
Son of the Beach
Six Feet Under
Makes you think, if you have too much on your hands.
You forgot:
Small Wonder
Silk Stockings
Son of the Beach
Swamp Thing
Streeet Hawk
The Snorks
Sweet Valley High
Square Pegs
Star Trek
Square One
South Park
Saturday Night Live
Slayer of Vampires, Buffy
And Stripperella.
No, I don’t watch it.
Just an opposing viewpoint.
Monty Python
X-Files
The Wire
And you might want to think about the fact that American TV shows names are carefully designed to have pleasing sounds and evocative images.
But there is Sifl and Olly!
No-one mentioned SOAP yet?
On the other hand, I can’t think of any British show I like that starts with an S. 
(Ok, best for me, it was my all time favorite!) 
Dragon Phoenix, ever seen Spaced?
I must have started this young.
My first thought was:
Seasame Street
Fnoonf, no. I have not seen any new shows since early 1999, and before that only BBC ones.
Ah, OK. If you’re into self-consciously hip, post-modern, surrealistic comedies stuffed chock-full of cultural references, it might be your cuppa. That goes for everyone else too, incidentally.
OK, plug over.
slithers back to lair, fondles shiny Spaced Season 2 DVD
Spongebob Squarepants
Samurai Jack
Survivor
sCheers
sAmazing Race
sCSI
s24
Scrubs.
Sawlty Towers?
Hmm…
Surb Your Enthusiasm.
Sall in the Family
SAS*H
Sheers
The Sandy Griffith Show
Slate Night with Conan O’Brien
Sernie Mac.
Wow! You’re right!
Happy
Smallville
Spiderman
Strangers With Candy